lifeline的意思是：生命线；救生索。读音为：英 /ˈlaɪflaɪn/ 美 /ˈlaɪflaɪn/。复数 lifelines。
双语例句：
1.Information about the job market can be a lifeline for those who are out of work.
有关就业市场的信息可能就是失业者的生命线。
2.Click the diagram frame and drag it to the lifeline.
点击这个图框并将它拖拽到生命线。
3.People count on hospitals and health facilities to respond, swiftly and efficiently, as the lifeline for survival and the backbone of support.
人们指望医院和卫生机构作为生存的命脉和提供支持的栋梁，迅速而有效地作出回应。
4.After German U-boats torpedoed numerous British ships, a 2,700-strong fleet of cheap- and-cheerful "Liberty ships" was introduced to replace the lost vessels, providing a lifeline for the 29 British.
在德国的 U 型潜艇用鱼雷击沉了大量的英国船只之后，一支由2700艘廉价而令人欢呼的“自由船”船队被引进来，以替换失去的船只，为29名英国人提供了一条救生索。
5.The extra payments are a lifeline for most single mothers.
额外补助对大多数单身母亲来说都是赖以生存的生命线。
