柠檬汁的作用应该是加强苹果中的天然果胶，非理科生，不晓得是不是正解。。。。。

来源: 为爱走天涯于 2016-01-29 17:57:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.