多謝,娃數學不差,但不是數學競賽娃,不想他花太多時間在無意義的事情上,因為太多其他事情要去做。

來源: jmp 於 2024-06-05 15:08:28 [舊帖] [給我悄悄話] 本文已被閱讀：次

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