有的是不是就這一邊啊？數學做到IMO級別，是不是很花時間啊？不過不少順勢做了數學相關的活動倒是

來源: 兩女寶媽於 2025-01-05 10:43:30 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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