任何划分方法，都有左中右之分。左中右，本质上是看问题的度。

来源: 衡山老道于 2022-06-11 17:59:18 [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.