... air washer 空气洗涤器；净气设备 airborne dust 空气浮尘；空气中的尘埃；飘尘 airborne noise 经空气传送的噪音 ...
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过滤网可存住空气中的尘埃。
难怪有玻璃颗粒微小的斑点，原来是空气中的尘埃是麻烦！
No wonder there are tiny spots of the particles of glass, originally is the dust in the air is in trouble!
上升过程中，这些元素附着在空气中的尘埃上，变成微粒，大小相当于一粒砂子的四分之一。
As these rise, they latch on to dust in the air and become particulates, a quarter the size of a grain of sand.
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