我還在想你第三個對子是不是要搞微分積分無窮極限呀，幸好鳳舞隻學到算術和pre-calulus，就此打住了

來源: Chalet 於 2020-08-13 10:35:06 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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