diff --git a/crates/typst-library/src/foundations/cast.rs b/crates/typst-library/src/foundations/cast.rs
index 38f409c670..9744501721 100644
--- a/crates/typst-library/src/foundations/cast.rs
+++ b/crates/typst-library/src/foundations/cast.rs
@@ -478,25 +478,25 @@ cast! {
         MathClass::Vary => "vary",
         MathClass::Special => "special",
     }),
-    /// The default class for non-special things.
+    /// 特別でない要素のデフォルトクラス。
     "normal" => MathClass::Normal,
-    /// Punctuation, e.g. a comma.
+    /// カンマなどの句読点。
     "punctuation" => MathClass::Punctuation,
-    /// An opening delimiter, e.g. `(`.
+    /// `(`などの開き区切り文字。
     "opening" => MathClass::Opening,
-    /// A closing delimiter, e.g. `)`.
+    /// `)`などの閉じ区切り文字。
     "closing" => MathClass::Closing,
-    /// A delimiter that is the same on both sides, e.g. `|`.
+    /// `|`などの両側が同じ区切り文字。
     "fence" => MathClass::Fence,
-    /// A large operator like `sum`.
+    /// `sum`のような大型演算子。
     "large" => MathClass::Large,
-    /// A relation like `=` or `prec`.
+    /// `=`や`prec`のような関係記号。
     "relation" => MathClass::Relation,
-    /// A unary operator like `not`.
+    /// `not`のような単項演算子。
     "unary" => MathClass::Unary,
-    /// A binary operator like `times`.
+    /// `times`のような二項演算子。
     "binary" => MathClass::Binary,
-    /// An operator that can be both unary or binary like `+`.
+    /// `+`のような単項にも二項にもなる演算子。
     "vary" => MathClass::Vary,
 }
 
diff --git a/crates/typst-library/src/math/mod.rs b/crates/typst-library/src/math/mod.rs
index 2e6d42b132..f682ed25a4 100644
--- a/crates/typst-library/src/math/mod.rs
+++ b/crates/typst-library/src/math/mod.rs
@@ -119,15 +119,13 @@ impl AlignPointElem {
     }
 }
 
-/// Forced use of a certain math class.
+/// 特定の数式クラスを強制的に適用。
 ///
-/// This is useful to treat certain symbols as if they were of a different
-/// class, e.g. to make a symbol behave like a relation. The class of a symbol
-/// defines the way it is laid out, including spacing around it, and how its
-/// scripts are attached by default. Note that the latter can always be
-/// overridden using [`{limits}`](math.limits) and [`{scripts}`](math.scripts).
+/// これは、特定の記号を異なるクラスのように扱うのに便利です。例えば、ある記号を関係のように振る舞わせることができます。
+/// 記号のクラスは、レイアウトのされ方、周囲の空白の入れ方、添え字がデフォルトでどのように取り付けられるかを定義します。
+/// 添え字の取り付け方は[`{limits}`](math.limits)や[`{scripts}`](math.scripts)を使って常に上書きできることに注意してください。
 ///
-/// # Example
+/// # 例
 /// ```example
 /// #let loves = math.class(
 ///   "relation",
@@ -138,11 +136,11 @@ impl AlignPointElem {
 /// ```
 #[elem(Mathy)]
 pub struct ClassElem {
-    /// The class to apply to the content.
+    /// コンテンツに適用するクラス。
     #[required]
     pub class: MathClass,
 
-    /// The content to which the class is applied.
+    /// クラスを適用するコンテンツ。
     #[required]
     pub body: Content,
 }
diff --git a/website/translation-status.json b/website/translation-status.json
index da11b248b6..9aadb495da 100644
--- a/website/translation-status.json
+++ b/website/translation-status.json
@@ -83,7 +83,7 @@
 	"/docs/reference/math/binom/": "translated",
 	"/docs/reference/math/cancel/": "translated",
 	"/docs/reference/math/cases/": "translated",
-	"/docs/reference/math/class/": "untranslated",
+	"/docs/reference/math/class/": "translated",
 	"/docs/reference/math/equation/": "translated",
 	"/docs/reference/math/frac/": "translated",
 	"/docs/reference/math/lr/": "translated",