The emission of smoke and ashes from that factory must be controlled.
那个工厂排放的烟尘必须得到控制。
The smoke dedusted by the wet method can meet emission standard.
烟气经湿式除尘后达到排放标准。
The emission of smoke and ashes is from that factory.
烟尘是从那个工厂排放出来的。
The emission of smoke and ashes is from that factory.
烟尘是从那个工厂排放出来的。
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