現在還有再讀一下當時的課本，把課本裏的習題從頭到尾的想法。我好像還留著當時的課本。

來源: xia23 於 2024-12-02 03:42:16 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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