单词详解

n.

氧气，氧(one of the gases which make up the air)

  No living things can live without oxygen.生物离开氧气就无法生存。

相关词组

lack of oxygen缺氧

He died from lack of oxygen.他是因为缺氧而死的。

相关单词

形容词：oxygenic

近义词：air