diff --git a/crates/typst-library/src/math/frac.rs b/crates/typst-library/src/math/frac.rs
index db91b7a585..2357715ebc 100644
--- a/crates/typst-library/src/math/frac.rs
+++ b/crates/typst-library/src/math/frac.rs
@@ -28,20 +28,20 @@ pub struct FracElem {
     pub denom: Content,
 }
 
-/// A binomial expression.
+/// 二項係数。
 ///
-/// # Example
+/// # 例
 /// ```example
 /// $ binom(n, k) $
 /// $ binom(n, k_1, k_2, k_3, ..., k_m) $
 /// ```
 #[elem(title = "Binomial", Mathy)]
 pub struct BinomElem {
-    /// The binomial's upper index.
+    /// 二項係数の上側の数。
     #[required]
     pub upper: Content,
 
-    /// The binomial's lower index.
+    /// 二項係数の下側の数。
     #[required]
     #[variadic]
     #[parse(
diff --git a/website/translation-status.json b/website/translation-status.json
index 413a5a14b9..ff3dba1e7d 100644
--- a/website/translation-status.json
+++ b/website/translation-status.json
@@ -80,7 +80,7 @@
 	"/docs/reference/math/": "untranslated",
 	"/docs/reference/math/accent/": "translated",
 	"/docs/reference/math/attach/": "translated",
-	"/docs/reference/math/binom/": "untranslated",
+	"/docs/reference/math/binom/": "translated",
 	"/docs/reference/math/cancel/": "translated",
 	"/docs/reference/math/cases/": "translated",
 	"/docs/reference/math/class/": "untranslated",