life-support

基本解释

The oceans are our life-support system.
海洋是人类的生命维持系统。
Of course, some of it will be recycled into the suit`s life-support system, so you`ll breathe a lot of it back in.
当然了，它们中的部分气体会回收到宇航服的生命维持系统中，你可能要将不少气体重新吸入体内。
She believed the alternative was crueller: watching him die slowly of hunger and thirst as his life-support mechanism was switched off - assuming that this had been allowed by the high court.
她之所以这样做是因为坚信其他抉择更加残忍：因为所有维持生命的机制都被切断，她只能眼睁睁地看着他慢慢死于饥渴--她假定这些都获得了高等法院的允许。

At risk are critical life-support systems that are also the lifeblood of our global economy.
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Many such enterprises are kept on life-support as long as government staves off deflation.
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Despite being on life-support machines since last autumn, he surrendered the prime-ministership only in January.
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Life support is a system that is used to keep a person alive when they are very ill and cannot breathe without help.