没有硬标准，WHO集体决定。是不影响各国，WHO管不了国家，是个参考

来源: GoGym 于 2020-03-11 10:48:23 [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.