新冠病毒也变异快，两年内从Alfa变到了Omicron.

来源: 阿明. 于 2021-12-17 15:02:38 [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.