diff --git a/sonar-keyware-plugins-cxx/src/main/java/org/sonar/cxx/parser/CxxGrammarImpl.java b/sonar-keyware-plugins-cxx/src/main/java/org/sonar/cxx/parser/CxxGrammarImpl.java
index 6be2a59..9a34fa9 100644
--- a/sonar-keyware-plugins-cxx/src/main/java/org/sonar/cxx/parser/CxxGrammarImpl.java
+++ b/sonar-keyware-plugins-cxx/src/main/java/org/sonar/cxx/parser/CxxGrammarImpl.java
@@ -32,7 +32,7 @@ public enum CxxGrammarImpl implements GrammarRuleKey {
     translationUnit, // 转译单位
 
     /**
-     * Expressions
+     * 表达式
      */
     primaryExpression, // 基本表达式
     idExpression, // id表达式
@@ -92,7 +92,9 @@ public enum CxxGrammarImpl implements GrammarRuleKey {
     assignmentOperator, // 赋值操作符
     expression, // 表达式
     constantExpression, // 常量表达式
-    // 语句
+    /**
+     * 语句
+     */
     statement, // 语句
     labeledStatement, // 标号语句
     expressionStatement, // 表达式语句