life-support system

剑桥词典

(also life support [ 不可数或单数名词：没有复数形式的名词 ])
the equipment used to keep a person alive when they are very ill , or injured
生命维持系统（或设备）
He's been on a life-support system since the crash . 自从发生车祸后，他就一直依赖生命维持系统。

the natural structures and systems that are necessary for living things, especially humans , to be able to live
（尤指人类的）生命维持体系，生态环境
The lack of rain is threatening all the region's life-support systems (= the earth , trees and rivers ). 降雨稀少正威胁着该地区的整个生态环境。 返回 life-support system