Wear masks to prevent fog and haze.
戴口罩目的是防雾霾。
Surgeons wear masks to prevent the spread of infection.
外科医生戴着口罩以防止传染病的传播。
During animal dissections, you need to wear masks to prevent infections.
动物解剖实验必须佩带口罩，以免发生生物污染。
People have to wear thick masks almost every day.
人们几乎每天都要戴厚厚的口罩。
Meteorologists advised the public to wear face masks to ward off dust.
气象学家建议公众外出时戴口罩。
The majority of actors are unable to do this because of the masks they wear.
舞台上的绝大多数演员无法歌唱与诵读，因为他们都戴着面具。
But unfortunately, air is also so polluted that they have to wear masks.
但不幸的是，空气污染，也使他们不得不戴上口罩。
Go out to travel, or play, please wear the masks.
出去旅游，或者游玩时，请戴上口罩。
Good idea. I can't wait to wear those cool white masks we bought!
好主意。我想马上戴上我们买的那些酷酷的白色面具了。
The rest of the students wear animal masks to play this game .
其他幼儿做小动物戴上头饰，大家来做寄信收信游戏。
Most of the people wear FILTER MASKS to protect them from the toxic air.
大多数人都带着防毒面罩以防毒气。
Most of the people wear FILTER MASKS to protect them from the toxic air.
大多数人都带着防毒面罩以防毒气。
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