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来源:雅诚德英语网
Although CFCs have been banned, the ozone layer is still being depleted from gases released many years ago, and holes exist above both poles.
尽管氯氟烃已经被禁用,但是由于多年前排出的气体,臭氧层仍然继续被损耗,目前在地球两极上方都有臭氧层空洞。
Although CFCs have been banned, the ozone layer is still being depleted from gases released many years ago, and holes exist above both poles.
尽管氯氟烃已经被禁用,但是由于多年前排出的气体,臭氧层仍然继续被损耗,目前在地球两极上方都有臭氧层空洞。