Word: 口罩 (kǒuzhào)

口罩一度供不应求。

Kǒuzhào yídù gōngbúyìngqiú.

Face masks were once in short supply.

志愿者在门口分发口罩。

Zhìyuànzhě zài ménkǒu fēnfā kǒuzhào.

Volunteers are handing out masks at the entrance.

我的口罩在哪？

Wǒ de kǒuzhào zài nǎ?

Where's my mask?

戴口罩是为了防疫。

Dài kǒuzhào shì wèile fángyì.

Wearing a mask is to prevent the spread of disease.