oxygen

n. /ˈɑːk.sɪ.dʒən/ B1

氧；氧气

A colourless, odourless gas necessary for the respiration of living things.

仙境例句

The little fish at school took oxygen from the water and never came up for air.

学校里的小鱼从水里吸取氧气，从来不用浮上去透气。