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来源:雅诚德英语网
The absence of oxygen on other planets means that those planets lack an ozone shield to protect life forms against UV radiation.
其他行星上没有氧气,这意味着这些行星缺乏保护生命体免受紫外线辐射的臭氧层。
The absence of oxygen on other planets means that those planets lack an ozone shield to protect life forms against UV radiation.
其他行星上没有氧气,这意味着这些行星缺乏保护生命体免受紫外线辐射的臭氧层。