介绍： mask 口罩，面具

Don't forget to wear an N95 mask when you go out.
出门别忘戴N95口罩。

I really need some disposable masks now.
我现在需要一些一次性口罩。

介绍： mask 口罩，面具

Don't forget to wear an N95 mask when you go out.
出门别忘戴N95口罩。

I really need some disposable masks now.
我现在需要一些一次性口罩。