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.

youdao

在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。

The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.

youdao

正因为辐射回宇宙的热量取决于其温度的高低，所以，小行星的下午会比上午辐射更多的热量。

Since the heat it radiates back into space depends on its temperature, the afternoon side of an asteroid radiates more heat than the morning side.

youdao