They breathe in air, then extract the oxygen and pass it into the bloodstream, where it's rushed off to the tissues and organs that require it to function.
他们吸入空气，然后把氧气提取出来并进入血液的流动中，被带到需要氧气来维持功能的组织和器官中。
2
We can extract mercury from cinnabar by heating it in air. We can also extract silver from silver oxide by heating.
我们可以在空气中把朱砂加热来提取汞。我们亦可以把氧化银加热来提取银。
3
Resistance: Containing sunflower extract and protective agent, it can reduce the injury of ultraviolet and the pollutant particle in the air, and postpone the skin ageing.