+。对快速变异的病毒，疫苗永远落在后面。

来源: 欲千北于 2021-02-13 11:27:47 [博客] [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.