這是把您現在學的像天書一樣的微積分，把ABCD改寫成甲乙丙丁，算是用中文加了一道密，成了超級天書。:)

來源: 蔣聞銘於 2024-10-21 11:56:30 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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