60年是6.7億。世界銀行數據，小時侯不一直說6億人口嗎？

來源: 誌在千裏於 2017-06-12 12:57:17 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.