曼省疫情速报 马尔教授说:“我们应该尝试将尽可能多的活动转移到户外。” “显然,避免人群密集是个好主意,并特别要注意建筑物的通风系统。” 马尔最后说:“我们不能阻止,但是我们可以减慢它的传播速 ...
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