美国CDC说“在社区传播率高的地方戴口罩”，哪些地方社区传播率高？看图

来源: shaoning 于 2022-12-31 08:03:04 [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