這些流行病都是從亞熱帶冬季開始傳染，向北擴散為主。結束的順序一致。在起點觀察過程和終點。

來源: plder 於 2020-03-05 20:10:31 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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