@caro_vina @August_West_GD @RadioFreeTom @mehdirhasan (Masking also protects the person wearing it, if the air isn't perfect clean. So the ONE other person in this situation wearing a mask is at lower risk too.)
@caro_vina@August_West_GD@RadioFreeTom@mehdirhasan（如果空气不完全干净，口罩也可以保护戴口罩的人。因此，在这种情况下，戴口罩的另一个人的风险也较低。）