lifeline

n.

救生索；（潜水员的）通报绳；生命线；重要的交通线

复数：lifelines

1. He threw me a lifeline when he offered me a job.
   他给我工作就相当于拋给了我一条救命索。
2. He clung to the lifeline and the woman pulled him towards the bank.
   他紧紧抓住救生索，那个女人把他拉向岸边。
3. To the education, the education quality is the lifeline.
   对于教育来说,教育质量是其生命线。
4. Public transport is a lifeline for many rural communities.
   公共交通对许多农村居民来说是不可或缺的。

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