we all know___airdoes harm to our health.(污染) 答案是不是polluting
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weallknow___airdoesharmtoourhealth.(污染)答案是不是pollutingweallknow___airdoesharmtoourhealth.(污染)答案是不是pol
we all know___airdoes harm to our health.(污染) 答案是不是polluting
we all know___airdoes harm to our health.(污染) 答案是不是polluting
we all know___airdoes harm to our health.(污染) 答案是不是polluting
polluted
被污染的