逆命題，否命題，逆否命題，去學學邏輯的基本知識。：）

來源: supercs88 於 2025-09-29 12:12:58 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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