對比一下發現美國每年的出生死亡比例約1%，中國的出生死亡比例約0.7%。美國人生育和死亡比例都高

來源: Arigato 於 2022-11-27 04:12:40 [舊帖] [給我悄悄話] 本文已被閱讀：次

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