He wore black evening clothes and a mask over his face.
他穿着黑色晚礼服，脸上戴着面罩。
Put the mask over your nose and mouth and breathe normally.
把面罩盖在口鼻上，像往常一样呼吸。
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。
And then my wife would come and put the mask back over my face.
后来我妻子过来，把氧气罩又盖在我脸上。
Oh, it's his. Peter, your mask is over there.
噢，这是它的。彼得。你的面罩在那边。
To hide things, just paint on black over the mask.
要隐藏的东西，只要画上黑色的面罩。
To hide things, just paint on black over the mask.
要隐藏的东西，只要画上黑色的面罩。
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