face mask
英 美
Should I buy a face mask just in case?
我需要买口罩以防万一吗？
If it's very cold, consider wearing a face mask or scarf to warm the air before it enters your lungs.
如果非常冷，可以考虑戴口罩或者围巾以使空气温暖的进入肺。
When it's really cold, wear a face mask or a scarf over your mouth to warm the air you breathe and protect your face.
很冷的时候，戴一个面罩或者围巾遮住嘴，可以给你呼吸的空气保点温，同时也可以保护你的脸。
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