随着近年来温室效应和空气污染越来越严重，清洁能源备受人们关注。
As the greenhouse effect and air pollution become more and more serious in recent years, clean energy draws much attention.
随着近年来温室效应和空气污染越来越严重，清洁能源备受人们关注。
As the greenhouse effect and air pollution become more and more serious in recent years, clean energy draws much attention.
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