外科(kē)醫(yī)用(yòng)口罩

surgical mask

surgical/ˈsɜː.dʒɪ.kəl/外科(kē)的

這種口罩一般有(yǒu)三層

A surgical mask has three layers.

能(néng)夠有(yǒu)效隔絕病毒

It can protect you from the virus.

但是建議4小(xiǎo)時候換一次

But it's suggested that you change it every 4 hours.

layer/ˈleɪ.ər/層

virus/ˈvaɪə.rəs/病毒

N95防護口罩

↓

N95 mask/respirator

respirator/ˈres.pɪ.reɪ.tər/防毒面罩

N指的是

↓

no oil is present

環境中(zhōng)無油

95指的是

↓

The filter will trap 95 particles larger than 0.3 microns out of every 100.

能(néng)夠過濾95%的直徑大于0.3的微粒。

filter/ˈfɪl.tər/過濾器，濾芯

trap /træp/捕捉

particle/ˈpɑː.tɪ.kəl/微粒

micron/ˈmaɪ.krɒn/微米

這兩種口罩是官方認證

可(kě)以有(yǒu)效隔絕病毒的口罩

一次性口罩

↓

single-use mask

single-use一次性的

比如

Single-use masks should be changed after wearing them for 4 hours.

四小(xiǎo)時後一次性口罩就應該換了。

更加可(kě)以說

↓

disposable mask

disposable /dɪˈspəʊ.zə.bəl/一次性的 

活性炭口罩

↓

activated carbon mask

activated /ˈæk.tɪ.veɪtd/活性

活性炭口罩隻能(néng)去除異味

Activated carbon masks can only remove smelly smells,

并不能(néng)過濾微粒

but it can't trap particles.
 

棉布口罩

↓

cotton mask

棉布口罩主要起到的是保暖作(zuò)用(yòng)

Cotton masks mainly protect you from the cold. 

願大家都能(néng)照顧好自己和家人，平安(ān)走出這次疫情。