Our lungs fuel us with oxygen, the body's life-sustaining gas.
我们的肺给我们泵入氧气，我们维持生命的气体。
 

2.bring back to life 使复活
 

Hospitals are places of great triumphs – when the seemingly dying are brought back to life.
医院是取得重大胜利的地方，那些似乎垂死者被抢救回来。