问题是新冠跟流感一样，没有群免这一说。这个好象楼主始终不明白。

来源: 周老大于 2022-12-24 17:18:49 [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.