diff --git a/表达式函数.md b/表达式函数.md
index 0f31ecb..da5d324 100644
--- a/表达式函数.md
+++ b/表达式函数.md
@@ -60,6 +60,8 @@ public static class DbFunc
             return $"date_format({up.Values["that"]}, {up.Values["arg1"]})";
         return "";
     }
+    
+    //...在此类中定义更多方法
 }
 
 var sql = fsql.Select<SysModule>()