diff --git a/app/account_service.py b/app/account_service.py
index 4de84ee..1717889 100644
--- a/app/account_service.py
+++ b/app/account_service.py
@@ -32,7 +32,8 @@ def signup():
             return str(warn)
         
         available = check_username_availability(username)
-        verified_2 = verify_passverified(password, password2)
+        
+        verified_2 = verify_passverified(password, password2)  # 比较“密码”与“确认密码” 
         if not available: # 用户名不可用
             flash('用户名 %s 已经被注册。' % (username))
             return render_template('signup.html')