N-COUNT If you say that something is a lifesaver, you mean that it helps people in a very important way, often in a way that is important to their health. 健康救星
The cervical smear test is a lifesaver.
宫颈涂片检查是健康救星。
The new drug is a potential lifesaver.
这种新药有可能成为一种救命药。
The cervical smear test is a lifesaver.
宫颈涂片检查是健康救星。
David wanted to be a lifesaver but he couldn't swim!
戴维想当救生员，可他不会游泳！
"It's our lifesaver. I mean,it keeps us working." GM is investing $700 million into the vehicle.
VOA: standard.2010.07.30
So it's a wonderful vehicle and it's going to be a lifesaver,".
VOA: standard.2009.11.02
"This vehicle here will similarly be a lifesaver in Afghanistan,"
VOA: standard.2009.11.02
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