我沒說逆命題一定成立還是一定不成立。隻是您的推理方式不正確。別總覺得別人一定是反對您的結論似的。

來源: davidhu1999 於 2018-05-23 03:55:10 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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