我理想的地球環境是，人口維持在 20億左右，地表森林覆蓋率近80%。

來源: oldpp 於 2018-09-26 08:13:38 [博客] [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.

Change Ad Consent