哈哈，謝謝指正，微積分要學好也不容易的，很多學生隻知皮毛，不會精髓啊，化學的啥的我一直覺得很容易

來源: 青裁於 2025-01-25 18:45:57 [舊帖] [給我悄悄話] 本文已被閱讀：次

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