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沙土花生
it,s the best to go to school on foot or by bike.
油墩子2016
减少空气污染To reduce air pollution树是一种可再生资源，树有助于减少空气污染。Trees are a renewable resource, and they help to reduce air pollution.如有疑问请继续追问，望采纳，谢谢，您的采纳就是我的力量！
贝贝塔11
less pollution
依然泛泛
We must take action to / reduce polution and protect our health.
口秋口秋
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