这个比喻挺生动。数据挺有道理，和实际观察一致

来源: opthb 于 2025-02-13 12:38:47 [旧帖] [给我悄悄话] 本文已被阅读：次

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