美國貧富差距大，但是經濟更具活力，科技創新也厲害。

來源: 南半球於 2021-07-21 15:20:49 [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.