那裏都有土地，開始時都土地無窮多。中國之類人口不斷增長到經常性人口過剩，為何古代美洲的人口不會大量繁殖到過剩？

來源: 和氣客氣於 2024-07-12 18:47:14 [舊帖] [給我悄悄話] 本文已被閱讀：次

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