同时发生的机会太小，应该是男性或女性的生殖细胞

来源: fourwaves 于 2019-12-16 11:13:59 [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.

Change Ad Consent