diff --git a/apps/ely-doc/src/chrome.rs b/apps/ely-doc/src/chrome.rs
index a6c3113..c849bf6 100644
--- a/apps/ely-doc/src/chrome.rs
+++ b/apps/ely-doc/src/chrome.rs
@@ -24,17 +24,18 @@ impl Docs {
         let Some(counts) = self.active_tab().and_then(|tab| tab.extra.counts) else {
             return status.when_some(zoom, |status, zoom| status.right(zoom));
         };
-        let (words, characters) = (counts.words.to_string(), counts.characters.to_string());
+        let count = |key, n: u64| ely_ui::i18n::counted(cx, key, n, &[("n", &n.to_string())]);
         let label = match counts.selected_words {
-            0 => Self::text(
-                cx,
-                "doc.count.words",
-                &[("words", &words), ("characters", &characters)],
-            ),
-            selected => Self::text(
+            0 => {
+                let words = count("doc.count.word", counts.words);
+                let characters = count("doc.count.character", counts.characters);
+                Self::text(cx, "doc.count.words", &[("words", &words), ("characters", &characters)])
+            }
+            selected => ely_ui::i18n::counted(
                 cx,
                 "doc.count.selected",
-                &[("selected", &selected.to_string()), ("words", &words)],
+                counts.words,
+                &[("selected", &selected.to_string()), ("words", &counts.words.to_string())],
             ),
         };
         status.right(StatusBarItem::new("doc-count").label(label)).when_some(zoom, |status, zoom| status.right(zoom))
diff --git a/apps/ely-doc/src/merge/run.rs b/apps/ely-doc/src/merge/run.rs
index bb0f720..62c6f94 100644
--- a/apps/ely-doc/src/merge/run.rs
+++ b/apps/ely-doc/src/merge/run.rs
@@ -260,9 +260,8 @@ impl Docs {
                 let folder = folder.display().to_string();
                 let text = match written {
                     Ok(count) => {
-                        let count = count.to_string();
-                        let text =
-                            Docs::text(cx, "doc.merge.done", &[("n", &count), ("folder", &folder)]);
+                        let n = count.to_string();
+                        let text = ely_ui::i18n::counted(cx, "doc.merge.done", count as u64, &[("n", &n), ("folder", &folder)]);
                         return docs.toast(text, Severity::Success, cx);
                     }
                     Err((n, error)) => Docs::text(
diff --git a/apps/ely-pdf/src/ask.rs b/apps/ely-pdf/src/ask.rs
index 52a23bc..dbfa1b4 100644
--- a/apps/ely-pdf/src/ask.rs
+++ b/apps/ely-pdf/src/ask.rs
@@ -183,7 +183,7 @@ impl Viewer {
                 written.map(|()| targets.len())
             },
             move |viewer, done, _, cx| match done {
-                Ok(count) => viewer.toast_output(Self::text(cx, "pdf.split.done", &[("count", &count.to_string())]), opened.clone(), cx),
+                Ok(count) => viewer.toast_output(ely_ui::i18n::counted(cx, "pdf.split.done", count as u64, &[("count", &count.to_string())]), opened.clone(), cx),
                 Err(error) => viewer.failed_write(&stem, &error, cx),
             },
             cx,
@@ -205,8 +205,7 @@ impl Viewer {
         };
         let card = match self.ask.as_ref()? {
             Ask::Crop { pages, margins, .. } => {
-                let count = pages.len().to_string();
-                let title = Self::text(cx, "pdf.crop.title", &[("count", &count)]);
+                let title = ely_ui::i18n::counted(cx, "pdf.crop.title", pages.len() as u64, &[("count", &pages.len().to_string())]);
                 let sides = ["top", "right", "bottom", "left"];
                 let rows = sides.iter().enumerate().fold(DescriptionList::new(), |rows, (at, side)| {
                     let name = label(&format!("pdf.crop.{side}"));
diff --git a/apps/ely-pdf/src/ocr.rs b/apps/ely-pdf/src/ocr.rs
index 008785f..d9050de 100644
--- a/apps/ely-pdf/src/ocr.rs
+++ b/apps/ely-pdf/src/ocr.rs
@@ -161,7 +161,7 @@ impl Viewer {
         cx.notify();
         let pages: Vec<(usize, Vec<OcrLine>)> = run.read.into_iter().filter(|(_, lines)| replace || !lines.is_empty()).collect();
         let (read, skipped) = (pages.len().to_string(), run.skipped.to_string());
-        let summary = Self::text(cx, "pdf.ocr.done", &[("read", &read), ("skipped", &skipped)]);
+        let summary = ely_ui::i18n::counted(cx, "pdf.ocr.done", pages.len() as u64, &[("read", &read), ("skipped", &skipped)]);
         let Some(view) = self.tab(tab).map(|tab| tab.view.clone()).filter(|_| !pages.is_empty()) else {
             return self.toast(summary, Severity::Info, cx);
         };
diff --git a/apps/ely-pdf/src/output.rs b/apps/ely-pdf/src/output.rs
index 49b40ee..7b548d7 100644
--- a/apps/ely-pdf/src/output.rs
+++ b/apps/ely-pdf/src/output.rs
@@ -177,7 +177,7 @@ impl Viewer {
             },
             move |viewer, done, _, cx| match done {
                 Ok(count) => {
-                    let text = Self::text(cx, "pdf.export.images_done", &[("count", &count.to_string())]);
+                    let text = ely_ui::i18n::counted(cx, "pdf.export.images_done", count as u64, &[("count", &count.to_string())]);
                     match folder.clone() {
                         Some(folder) => viewer.toast_output(text, folder, cx),
                         None => viewer.toast(text, Severity::Success, cx),
diff --git a/apps/ely-pdf/src/redact.rs b/apps/ely-pdf/src/redact.rs
index 53d3225..c9bcfec 100644
--- a/apps/ely-pdf/src/redact.rs
+++ b/apps/ely-pdf/src/redact.rs
@@ -185,7 +185,7 @@ impl Viewer {
             },
             move |viewer, done, _, cx| match done {
                 Ok(0) => viewer.toast_output(Self::text(cx, "pdf.clean.done", &[("name", &shown)]), opened.clone(), cx),
-                Ok(n) => viewer.toast_output(Self::text(cx, "pdf.redact.done", &[("name", &shown), ("count", &n.to_string())]), opened.clone(), cx),
+                Ok(n) => viewer.toast_output(ely_ui::i18n::counted(cx, "pdf.redact.done", n as u64, &[("name", &shown), ("count", &n.to_string())]), opened.clone(), cx),
                 Err(error) => viewer.failed(&error, cx),
             },
             cx,
@@ -200,8 +200,8 @@ impl Viewer {
         let (title, body) = match removal {
             Removal::Clean { reach, what, .. } => ("pdf.clean.title", self.clean_rows(reach, *what, &this, cx)),
             Removal::Redact { regions, .. } => {
-                let count = regions.len().to_string();
-                ("pdf.redact.title", div().child(Self::text(cx, "pdf.redact.count", &[("count", &count)])).into_any_element())
+                let count = ely_ui::i18n::counted(cx, "pdf.redact.count", regions.len() as u64, &[("count", &regions.len().to_string())]);
+                ("pdf.redact.title", div().child(count).into_any_element())
             }
         };
         let title = Self::text(cx, title, &[("name", &name)]);
diff --git a/apps/ely-show/src/output.rs b/apps/ely-show/src/output.rs
index 3fb3816..89bd761 100644
--- a/apps/ely-show/src/output.rs
+++ b/apps/ely-show/src/output.rs
@@ -292,8 +292,8 @@ impl Deck {
             },
             move |deck, written, _, cx| match written {
                 Ok(count) => {
-                    let count = count.to_string();
-                    let text = Deck::text(cx, "show.output.pictures_done", &[("n", &count), ("folder", &shown)]);
+                    let n = count.to_string();
+                    let text = ely_ui::i18n::counted(cx, "show.output.pictures_done", count as u64, &[("n", &n), ("folder", &shown)]);
                     deck.toast_output(text, opened.clone(), cx);
                 }
                 Err(error) if error.kind() == io::ErrorKind::AlreadyExists => {
diff --git a/apps/ely-table/src/data.rs b/apps/ely-table/src/data.rs
index e7497ee..b9203f1 100644
--- a/apps/ely-table/src/data.rs
+++ b/apps/ely-table/src/data.rs
@@ -311,7 +311,7 @@ impl Book {
             move |book, picked, _, window, cx| {
                 let (c1, _, c2, _) = picked.area.expect("a data area");
                 if c1 != c2 {
-                    return book.warn_key("table.columns.one", cx);
+                    return book.warn_key("table.columns.same", cx);
                 }
                 let other = cx.new(|cx| TextInput::new(window, cx));
                 book.dialog = Some(Dialog::Columns {
diff --git a/apps/ely-table/src/sheets/dialogs.rs b/apps/ely-table/src/sheets/dialogs.rs
index 2149076..52d7a5c 100644
--- a/apps/ely-table/src/sheets/dialogs.rs
+++ b/apps/ely-table/src/sheets/dialogs.rs
@@ -114,19 +114,15 @@ pub(crate) fn delete(
     let mut detail = if references.formulas + references.names == 0 {
         Book::text(cx, "table.delete.alone", &[])
     } else {
-        Book::text(
-            cx,
-            "table.delete.refs",
-            &[
-                ("formulas", &references.formulas.to_string()),
-                ("first", &references.first),
-                ("names", &references.names.to_string()),
-            ],
-        )
+        let count = |key, n: u64| ely_ui::i18n::counted(cx, key, n, &[("n", &n.to_string())]);
+        let formulas = count("table.delete.formulas", references.formulas);
+        let names = count("table.delete.names", references.names);
+        let args = [("formulas", formulas.as_ref()), ("first", &references.first), ("names", &names)];
+        Book::text(cx, "table.delete.refs", &args)
     };
     if references.dynamic > 0 {
         let count = references.dynamic.to_string();
-        let dynamic = Book::text(cx, "table.delete.dynamic", &[("count", &count)]);
+        let dynamic = ely_ui::i18n::counted(cx, "table.delete.dynamic", references.dynamic, &[("count", &count)]);
         detail = format!("{detail} {dynamic}").into();
     }
     let label = Book::text(cx, "table.delete.go", &[]);
diff --git a/apps/ely-tree/src/asks_places.rs b/apps/ely-tree/src/asks_places.rs
index c6077fe..3fd3fe6 100644
--- a/apps/ely-tree/src/asks_places.rs
+++ b/apps/ely-tree/src/asks_places.rs
@@ -95,9 +95,10 @@ impl Tree {
             Ask::Force { repo, plan } => {
                 let lost = match plan.lost.len() {
                     0 => label("tree.force.nothing"),
-                    n => text(
+                    n => ely_ui::i18n::counted(
                         cx,
                         "tree.force.lost",
+                        n as u64,
                         &[("n", &n.to_string()), ("commits", &plan.lost.join("\n"))],
                     ),
                 };
diff --git a/apps/ely-tree/src/pane.rs b/apps/ely-tree/src/pane.rs
index a50a1f3..72231a5 100644
--- a/apps/ely-tree/src/pane.rs
+++ b/apps/ely-tree/src/pane.rs
@@ -101,8 +101,8 @@ impl Tree {
         };
         let lines = (!shown.picked.is_empty() && self.partial(shown)).then(|| {
             let this = this.clone();
-            let n = shown.picked.len().to_string();
-            Button::new("tree-lines", text(cx, key, &[("n", &n)]))
+            let n = shown.picked.len();
+            Button::new("tree-lines", ely_ui::i18n::counted(cx, key, n as u64, &[("n", &n.to_string())]))
                 .variant(ButtonVariant::Primary)
                 .size(ControlSize::Sm)
                 .on_click(move |_, _, cx| {
diff --git a/apps/ely-tree/src/recovering.rs b/apps/ely-tree/src/recovering.rs
index 306bdd7..eb8ebd7 100644
--- a/apps/ely-tree/src/recovering.rs
+++ b/apps/ely-tree/src/recovering.rs
@@ -205,9 +205,10 @@ impl Tree {
                 let short = |oid: &str| oid[..oid.len().min(7)].to_string();
                 let left = match plan.left.len() {
                     0 => label("tree.move.nothing"),
-                    n => text(
+                    n => ely_ui::i18n::counted(
                         cx,
                         "tree.move.left",
+                        n as u64,
                         &[("n", &n.to_string()), ("commits", &plan.left.join("\n"))],
                     ),
                 };
diff --git a/apps/ely-tree/src/view.rs b/apps/ely-tree/src/view.rs
index a7c0180..cee2f5e 100644
--- a/apps/ely-tree/src/view.rs
+++ b/apps/ely-tree/src/view.rs
@@ -213,7 +213,7 @@ impl Tree {
                     0 => (IconName::CircleCheck, text(cx, "tree.clean", &[])),
                     n => (
                         IconName::GitBranch,
-                        text(cx, "tree.changed", &[("n", &n.to_string())]),
+                        ely_ui::i18n::counted(cx, "tree.changed", n as u64, &[("n", &n.to_string())]),
                     ),
                 };
                 EmptyState::new(("tree-summary", opened.id), icon, title).into_any_element()
diff --git a/crates/ely-ui/src/i18n.rs b/crates/ely-ui/src/i18n.rs
index 647a73e..b4e2a59 100644
--- a/crates/ely-ui/src/i18n.rs
+++ b/crates/ely-ui/src/i18n.rs
@@ -134,6 +134,16 @@ pub fn install(cx: &mut App) {
     let tag = locale_tag(cx);
     let locale = resolve(&tag);
     log::info!("i18n: locale {tag} -> {locale}");
+    let (en, zh) = catalogs();
+    cx.set_global(
+        I18n::new(locale)
+            .catalog("en-US", &en)
+            .catalog("zh-CN", &zh),
+    );
+}
+
+/// The English and Chinese catalogs, every module's messages.
+fn catalogs() -> (Vec<(&'static str, &'static str)>, Vec<(&'static str, &'static str)>) {
     let en: Vec<_> = EN
         .iter()
         .chain(office::EN)
@@ -182,11 +192,7 @@ pub fn install(cx: &mut App) {
         .chain(settings::ZH_CN)
         .copied()
         .collect();
-    cx.set_global(
-        I18n::new(locale)
-            .catalog("en-US", &en)
-            .catalog("zh-CN", &zh),
-    );
+    (en, zh)
 }
 
 /// `ELY_LOCALE`, then the language setting, then the system's.
@@ -203,9 +209,41 @@ pub fn text(cx: &App, key: &str, args: &[(&str, &str)]) -> SharedString {
     cx.global::<I18n>().text(key, args)
 }
 
+/// The message for `n` things: `key.one` when one, else `key`.
+pub fn counted(cx: &App, key: &str, n: u64, args: &[(&str, &str)]) -> SharedString {
+    text(cx, &count_key(key, n), args)
+}
+
+fn count_key(key: &str, n: u64) -> String {
+    match n {
+        1 => format!("{key}.one"),
+        _ => key.to_string(),
+    }
+}
+
 #[cfg(test)]
 mod tests {
-    use super::resolve;
+    use super::{catalogs, count_key, resolve};
+    use std::collections::BTreeSet;
+
+    #[test]
+    fn one_thing_takes_the_singular() {
+        assert_eq!(count_key("tree.changed", 1), "tree.changed.one");
+        for n in [0, 2, 21] {
+            assert_eq!(count_key("tree.changed", n), "tree.changed", "{n}");
+        }
+    }
+
+    #[test]
+    fn both_catalogs_hold_the_same_keys_and_singulars() {
+        let (en, zh) = catalogs();
+        let keys = |list: &[(&str, &str)]| list.iter().map(|(key, _)| key.to_string()).collect::<BTreeSet<_>>();
+        let (en, zh) = (keys(&en), keys(&zh));
+        assert_eq!(en.symmetric_difference(&zh).collect::<Vec<_>>(), Vec::<&String>::new());
+        for key in en.iter().filter_map(|key| key.strip_suffix(".one")) {
+            assert!(en.contains(key), "{key}.one has no plural");
+        }
+    }
 
     #[test]
     fn zh_variants_pick_zh_cn_others_pick_en() {
diff --git a/crates/ely-ui/src/i18n/data.rs b/crates/ely-ui/src/i18n/data.rs
index 1fb03f6..cb68be3 100644
--- a/crates/ely-ui/src/i18n/data.rs
+++ b/crates/ely-ui/src/i18n/data.rs
@@ -70,7 +70,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("table.columns.space", "Space"),
     ("table.columns.other", "Other"),
     ("table.columns.go", "Split"),
-    ("table.columns.one", "Select cells in one column."),
+    ("table.columns.same", "Select cells in one column."),
     ("table.filter.title", "Column {column}"),
     ("table.filter.up", "Sort A to Z"),
     ("table.filter.down", "Sort Z to A"),
@@ -230,7 +230,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("table.columns.space", "空格"),
     ("table.columns.other", "其他"),
     ("table.columns.go", "分列"),
-    ("table.columns.one", "请选同一列中的单元格。"),
+    ("table.columns.same", "请选同一列中的单元格。"),
     ("table.filter.title", "{column} 列"),
     ("table.filter.up", "升序排序"),
     ("table.filter.down", "降序排序"),
diff --git a/crates/ely-ui/src/i18n/pdf.rs b/crates/ely-ui/src/i18n/pdf.rs
index 058f2a8..72f3951 100644
--- a/crates/ely-ui/src/i18n/pdf.rs
+++ b/crates/ely-ui/src/i18n/pdf.rs
@@ -36,6 +36,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("pdf.side.marks", "Bookmarks"),
     ("pdf.page.label", "Page {n}"),
     ("pdf.crop.title", "Crop {count} pages"),
+    ("pdf.crop.title.one", "Crop 1 page"),
     ("pdf.crop.top", "Top"),
     ("pdf.crop.right", "Right"),
     ("pdf.crop.bottom", "Bottom"),
@@ -45,6 +46,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("pdf.split.every", "Pages per file"),
     ("pdf.split.go", "Choose Folder…"),
     ("pdf.split.done", "{count} files written"),
+    ("pdf.split.done.one", "1 file written"),
     ("pdf.extract.taken", "{name} is open; choose another name"),
     ("pdf.extract.done", "Pages written to {name}"),
     ("pdf.font.original", "The document's font"),
@@ -167,6 +169,7 @@ pub(super) const EN: &[(&str, &str)] = &[
         "pdf.ocr.done",
         "Recognized {read} pages; skipped {skipped}.",
     ),
+    ("pdf.ocr.done.one", "Recognized 1 page; skipped {skipped}."),
     ("pdf.mark.add", "Add Bookmark"),
     ("pdf.mark.rename", "Rename Bookmark"),
     ("pdf.mark.delete", "Delete Bookmark"),
@@ -195,11 +198,13 @@ pub(super) const EN: &[(&str, &str)] = &[
         "pdf.redact.count",
         "{count} marked regions are removed for good.",
     ),
+    ("pdf.redact.count.one", "1 marked region is removed for good."),
     ("pdf.redact.tail", "redacted"),
     (
         "pdf.redact.done",
         "Saved {name}: {count} regions removed and checked.",
     ),
+    ("pdf.redact.done.one", "Saved {name}: 1 region removed and checked."),
     ("pdf.clean.open", "Clean Document…"),
     ("pdf.clean.title", "Clean {name}"),
     ("pdf.clean.meta", "Properties and metadata ({count})"),
@@ -254,6 +259,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("pdf.side.marks", "书签"),
     ("pdf.page.label", "第 {n} 页"),
     ("pdf.crop.title", "裁剪 {count} 页"),
+    ("pdf.crop.title.one", "裁剪 1 页"),
     ("pdf.crop.top", "上"),
     ("pdf.crop.right", "右"),
     ("pdf.crop.bottom", "下"),
@@ -263,6 +269,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("pdf.split.every", "每个文件的页数"),
     ("pdf.split.go", "选择文件夹…"),
     ("pdf.split.done", "已写入 {count} 个文件"),
+    ("pdf.split.done.one", "已写入 1 个文件"),
     ("pdf.extract.taken", "{name} 已打开，请换一个名称"),
     ("pdf.extract.done", "页面已写入 {name}"),
     ("pdf.font.original", "文档自带字体"),
@@ -370,6 +377,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("pdf.ocr.replace", "重新识别，替换 Ely 此前的文字层"),
     ("pdf.ocr.reading", "正在识别第 {n} 页，共 {count} 页"),
     ("pdf.ocr.done", "识别了 {read} 页，跳过 {skipped} 页。"),
+    ("pdf.ocr.done.one", "识别了 1 页，跳过 {skipped} 页。"),
     ("pdf.mark.add", "添加书签"),
     ("pdf.mark.rename", "重命名书签"),
     ("pdf.mark.delete", "删除书签"),
@@ -392,11 +400,13 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("pdf.redact.title", "删除 {name} 中标记的内容"),
     ("pdf.redact.none", "请先标记要删除的文字或区域。"),
     ("pdf.redact.count", "将彻底删除 {count} 处标记。"),
+    ("pdf.redact.count.one", "将彻底删除 1 处标记。"),
     ("pdf.redact.tail", "已删除"),
     (
         "pdf.redact.done",
         "已保存 {name}：删除并核对了 {count} 处。",
     ),
+    ("pdf.redact.done.one", "已保存 {name}：删除并核对了 1 处。"),
     ("pdf.clean.open", "清理文档…"),
     ("pdf.clean.title", "清理 {name}"),
     ("pdf.clean.meta", "属性与元数据（{count}）"),
diff --git a/crates/ely-ui/src/i18n/play.rs b/crates/ely-ui/src/i18n/play.rs
index ca882ec..0e72c03 100644
--- a/crates/ely-ui/src/i18n/play.rs
+++ b/crates/ely-ui/src/i18n/play.rs
@@ -44,6 +44,7 @@ pub(super) const EN: &[(&str, &str)] = &[
         "show.output.pictures_done",
         "Wrote {n} pictures to {folder}",
     ),
+    ("show.output.pictures_done.one", "Wrote 1 picture to {folder}"),
     ("show.output.failed", "Output failed: {error}"),
     ("show.check.menu", "Check Presentation…"),
     ("show.check.title", "Presentation Check"),
@@ -97,6 +98,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("show.output.taken", "{name} 已存在，未写入任何文件"),
     ("show.output.done", "已导出 {name}"),
     ("show.output.pictures_done", "已写入 {n} 张图片到 {folder}"),
+    ("show.output.pictures_done.one", "已写入 1 张图片到 {folder}"),
     ("show.output.failed", "输出失败：{error}"),
     ("show.check.menu", "检查演示…"),
     ("show.check.title", "演示检查"),
diff --git a/crates/ely-ui/src/i18n/secure.rs b/crates/ely-ui/src/i18n/secure.rs
index 2dc9b4d..435bd14 100644
--- a/crates/ely-ui/src/i18n/secure.rs
+++ b/crates/ely-ui/src/i18n/secure.rs
@@ -126,6 +126,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("pdf.export.tail", "optimized"),
     ("pdf.export.done", "Saved {name}."),
     ("pdf.export.images_done", "Saved {count} page images."),
+    ("pdf.export.images_done.one", "Saved 1 page image."),
     (
         "pdf.export.optimized_done",
         "Saved {name}: {before} → {after}.",
@@ -246,6 +247,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("pdf.export.tail", "已优化"),
     ("pdf.export.done", "已保存 {name}。"),
     ("pdf.export.images_done", "已保存 {count} 张页面图片。"),
+    ("pdf.export.images_done.one", "已保存 1 张页面图片。"),
     (
         "pdf.export.optimized_done",
         "已保存 {name}：{before} → {after}。",
diff --git a/crates/ely-ui/src/i18n/table.rs b/crates/ely-ui/src/i18n/table.rs
index bc839ac..0f8776f 100644
--- a/crates/ely-ui/src/i18n/table.rs
+++ b/crates/ely-ui/src/i18n/table.rs
@@ -33,12 +33,17 @@ pub(super) const EN: &[(&str, &str)] = &[
     ),
     (
         "table.delete.refs",
-        "{formulas} formulas on other sheets, first {first}, and {names} named ranges refer to it; they will show #REF!.",
+        "{formulas} on other sheets, first {first}, and {names} refer to it; they will show #REF!.",
     ),
+    ("table.delete.formulas", "{n} formulas"),
+    ("table.delete.formulas.one", "1 formula"),
+    ("table.delete.names", "{n} named ranges"),
+    ("table.delete.names.one", "1 named range"),
     (
         "table.delete.dynamic",
         "{count} formulas or names use INDIRECT; what they point to is known only when they run, so they may break too.",
     ),
+    ("table.delete.dynamic.one", "1 formula or name uses INDIRECT; what it points to is known only when it runs, so it may break too."),
     ("table.delete.go", "Delete"),
     ("table.cells.rows_above", "Insert Rows Above"),
     ("table.cells.rows_below", "Insert Rows Below"),
@@ -119,12 +124,17 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ),
     (
         "table.delete.refs",
-        "其他工作表上有 {formulas} 个公式（第一个在 {first}）和 {names} 个命名区域引用它；删除后它们显示 #REF!。",
+        "其他工作表上有 {formulas}（第一个在 {first}）和 {names}引用它；删除后它们显示 #REF!。",
     ),
+    ("table.delete.formulas", "{n} 个公式"),
+    ("table.delete.formulas.one", "1 个公式"),
+    ("table.delete.names", "{n} 个命名区域"),
+    ("table.delete.names.one", "1 个命名区域"),
     (
         "table.delete.dynamic",
         "另有 {count} 个公式或名称用 INDIRECT，指向何处要运行时才知道，删除后也可能出错。",
     ),
+    ("table.delete.dynamic.one", "另有 1 个公式或名称用 INDIRECT，指向何处要运行时才知道，删除后也可能出错。"),
     ("table.delete.go", "删除"),
     ("table.cells.rows_above", "在上方插入行"),
     ("table.cells.rows_below", "在下方插入行"),
diff --git a/crates/ely-ui/src/i18n/tools.rs b/crates/ely-ui/src/i18n/tools.rs
index 757a14e..b805b64 100644
--- a/crates/ely-ui/src/i18n/tools.rs
+++ b/crates/ely-ui/src/i18n/tools.rs
@@ -2,8 +2,13 @@
 
 pub(super) const EN: &[(&str, &str)] = &[
     ("menu.tools", "Tools"),
-    ("doc.count.words", "{words} words, {characters} characters"),
+    ("doc.count.words", "{words}, {characters}"),
     ("doc.count.selected", "{selected} of {words} words"),
+    ("doc.count.selected.one", "{selected} of 1 word"),
+    ("doc.count.word", "{n} words"),
+    ("doc.count.word.one", "1 word"),
+    ("doc.count.character", "{n} characters"),
+    ("doc.count.character.one", "1 character"),
     ("office.find.open", "Find and Replace"),
     ("office.find.stale", "Edited. Enter counts again."),
     ("doc.spell.ignore_all", "Ignore All"),
@@ -50,6 +55,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("doc.merge.unreadable", "{name} cannot be read: {error}"),
     ("doc.merge.exists", "{name} exists. Nothing was written."),
     ("doc.merge.done", "Wrote {n} files to {folder}"),
+    ("doc.merge.done.one", "Wrote 1 file to {folder}"),
     (
         "doc.merge.failed",
         "The merge stopped at record {n}: {error}",
@@ -58,8 +64,13 @@ pub(super) const EN: &[(&str, &str)] = &[
 
 pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("menu.tools", "工具"),
-    ("doc.count.words", "{words} 字，{characters} 字符"),
+    ("doc.count.words", "{words}，{characters}"),
     ("doc.count.selected", "已选 {selected} / {words} 字"),
+    ("doc.count.selected.one", "已选 {selected} / 1 字"),
+    ("doc.count.word", "{n} 字"),
+    ("doc.count.word.one", "1 字"),
+    ("doc.count.character", "{n} 字符"),
+    ("doc.count.character.one", "1 字符"),
     ("office.find.open", "查找和替换"),
     ("office.find.stale", "已改动，回车重新计数"),
     ("doc.spell.ignore_all", "全部忽略"),
@@ -103,5 +114,6 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("doc.merge.unreadable", "无法读取 {name}：{error}"),
     ("doc.merge.exists", "{name} 已存在，未写入任何文件。"),
     ("doc.merge.done", "已写入 {n} 个文件到 {folder}"),
+    ("doc.merge.done.one", "已写入 1 个文件到 {folder}"),
     ("doc.merge.failed", "合并在第 {n} 条停止：{error}"),
 ];
diff --git a/crates/ely-ui/src/i18n/tree.rs b/crates/ely-ui/src/i18n/tree.rs
index 81627a0..9fba88c 100644
--- a/crates/ely-ui/src/i18n/tree.rs
+++ b/crates/ely-ui/src/i18n/tree.rs
@@ -17,6 +17,7 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("tree.clone.busy", "A clone is already running."),
     ("tree.clean", "Nothing to commit"),
     ("tree.changed", "{n} files changed"),
+    ("tree.changed.one", "1 file changed"),
     ("tree.no_git", "Git is not available"),
     ("tree.unreadable", "This repository could not be read"),
     ("tree.branch.detached", "Detached at {oid}"),
@@ -62,7 +63,9 @@ pub(super) const EN: &[(&str, &str)] = &[
     ("tree.layout.unified", "Unified"),
     ("tree.layout.split", "Side by Side"),
     ("tree.lines.stage", "Stage {n} Lines"),
+    ("tree.lines.stage.one", "Stage 1 Line"),
     ("tree.lines.unstage", "Unstage {n} Lines"),
+    ("tree.lines.unstage.one", "Unstage 1 Line"),
     ("tree.hunk.stage", "Stage Hunk"),
     ("tree.hunk.unstage", "Unstage Hunk"),
     ("tree.open_file", "Open File"),
@@ -144,6 +147,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("tree.clone.busy", "已有克隆正在进行。"),
     ("tree.clean", "没有要提交的改动"),
     ("tree.changed", "{n} 个文件有改动"),
+    ("tree.changed.one", "1 个文件有改动"),
     ("tree.no_git", "Git 不可用"),
     ("tree.unreadable", "无法读取此仓库"),
     ("tree.branch.detached", "游离于 {oid}"),
@@ -183,7 +187,9 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ("tree.layout.unified", "行内"),
     ("tree.layout.split", "并排"),
     ("tree.lines.stage", "暂存 {n} 行"),
+    ("tree.lines.stage.one", "暂存 1 行"),
     ("tree.lines.unstage", "取消暂存 {n} 行"),
+    ("tree.lines.unstage.one", "取消暂存 1 行"),
     ("tree.hunk.stage", "暂存此块"),
     ("tree.hunk.unstage", "取消暂存此块"),
     ("tree.open_file", "打开文件"),
diff --git a/crates/ely-ui/src/i18n/tree_places.rs b/crates/ely-ui/src/i18n/tree_places.rs
index 1317582..66fc8aa 100644
--- a/crates/ely-ui/src/i18n/tree_places.rs
+++ b/crates/ely-ui/src/i18n/tree_places.rs
@@ -46,6 +46,7 @@ pub(super) const EN: &[(&str, &str)] = &[
         "tree.force.lost",
         "These {n} commits on the remote would be overwritten:\n{commits}",
     ),
+    ("tree.force.lost.one", "This commit on the remote would be overwritten:\n{commits}"),
     ("tree.stash.open", "Stash Changes…"),
     ("tree.stash.title", "Stash changes"),
     ("tree.stash.message", "Message"),
@@ -131,6 +132,7 @@ pub(super) const EN: &[(&str, &str)] = &[
         "tree.move.left",
         "These {n} commits leave it; the reflog still finds them:\n{commits}",
     ),
+    ("tree.move.left.one", "This commit leaves it; the reflog still finds it:\n{commits}"),
     ("tree.clean.open", "Clean Untracked Files…"),
     ("tree.clean.title", "Clean untracked files"),
     ("tree.clean.ignored", "Include ignored files"),
@@ -186,6 +188,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
     ),
     ("tree.force.nothing", "远端没有本分支缺少的提交。"),
     ("tree.force.lost", "远端这 {n} 个提交会被覆盖：\n{commits}"),
+    ("tree.force.lost.one", "远端这 1 个提交会被覆盖：\n{commits}"),
     ("tree.stash.open", "储藏改动…"),
     ("tree.stash.title", "储藏改动"),
     ("tree.stash.message", "说明"),
@@ -265,6 +268,7 @@ pub(super) const ZH_CN: &[(&str, &str)] = &[
         "tree.move.left",
         "这 {n} 个提交将离开该分支，引用日志里仍可找回：\n{commits}",
     ),
+    ("tree.move.left.one", "这 1 个提交将离开该分支，引用日志里仍可找回：\n{commits}"),
     ("tree.clean.open", "清理未跟踪的文件…"),
     ("tree.clean.title", "清理未跟踪的文件"),
     ("tree.clean.ignored", "包括被忽略的文件"),