只知其一不知其二。矛盾的双方是可以互相转化的。

来源: 桃花源主于 2019-09-17 03:19:37 [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.