CFCs are the chief destroyers of the ozone layer.
氯氟烃是破坏臭氧层
元凶。
CFCs are the chief destroyers of the ozone layer.
氯氟烃是破坏臭氧层元凶。
The ozone layer surrounding the earth protects our skin from being hurt by the ultraviolet rays.
环绕地球臭氧层保护着我
肤免受紫外线伤
。
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指正。
