不懂呀。不同的取样的人群分布，不同的结果。

来源: bearista 于 2026-02-01 13:38:40 [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.