d*********o
发帖数: 6388 | 1 http://www.nytimes.com/2022/01/15/world/china-masks-usa.html
美疾控中心周五承认，布质口罩不能像外科口罩那样有效地保护美国人免受冠状病毒感
染。在东亚，人们多年来一直在公共场合戴着外科口罩，这已经是一个常识。
The Centers for Disease Control and Prevention conceded in an announcement
on Friday that cloth masks do not protect against the coronavirus as
effectively as surgical masks or respirators.
In East Asia, a pronouncement like that would not be necessary because it is
already common knowledge. |
V********u
发帖数: 80 | 2 一天又一天
is
【在 d*********o 的大作中提到】
: http://www.nytimes.com/2022/01/15/world/china-masks-usa.html
: 美疾控中心周五承认，布质口罩不能像外科口罩那样有效地保护美国人免受冠状病毒感
: 染。在东亚，人们多年来一直在公共场合戴着外科口罩，这已经是一个常识。
: The Centers for Disease Control and Prevention conceded in an announcement
: on Friday that cloth masks do not protect against the coronavirus as
: effectively as surgical masks or respirators.
: In East Asia, a pronouncement like that would not be necessary because it is
: already common knowledge.
|
P**C
发帖数: 4333 | |
b*****2
发帖数: 11103 | 4 这得发一个诺奖吧
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b*****2
发帖数: 11103 | 5 这得发一个诺奖吧
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