第二個對子才搞笑，正弦餘弦定理都搞出來了，還好她沒說sine，cosine，哈哈哈

來源: Chalet 於 2020-08-13 10:29:48 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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