兩個氣球截麵部分重合是概率，但是抓住所有的概率瞬間就不是概率了，更何況還是動態 :-)

來源: papyrus 於 2021-04-23 12:13:09 [舊帖] [給我悄悄話] 本文已被閱讀：次

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