diff --git a/library/think/Lang.php b/library/think/Lang.php
index ab7b3870..087661dd 100644
--- a/library/think/Lang.php
+++ b/library/think/Lang.php
@@ -25,7 +25,7 @@ class Lang
     protected static $langCookieExpire = 3600;
     // 允许语言列表
     protected static $allowLangList = [];
-
+    // Accept-Language转义为对应语言包名称 系统默认配置
     private static $acceptLanguage = ['zh-hans-cn'=>'zh-cn'];
 
     // 设定当前的语言