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lifesaver

美音:[´laıf´seıvə ]点这儿播放单词美音发声
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n.救生者,水难救生员,济急的人

难易程度:

lifesaver为短语/超纲词汇

词形变化:

名词:lifesaving

lifesaver


n[C]
someone or something that helps you avoid a difficult or unpleasant situation
 A microwave oven can be a real lifesaver when you're pressed for time.
someone or something that prevents you from dying
 The seatbelt is the biggest single lifesaver in cars.
a life guard