lifesaver

英 [ˈlaɪfseɪvə(r)]

美 [ˈlaɪfseɪvər]

n.  救助物; 救命物

复数：lifesavers　

TOEFL

BNC.41805 / COCA.22409

牛津词典

noun

• 救助物；救命物
  a thing that helps sb in a difficult situation; sth that saves sb's life
• 救助物；救命物
  a thing that helps sb in a difficult situation; sth that saves sb's life

柯林斯词典

• N-COUNT （常指在健康方面）帮助解除困境之物
  If you say that something is alifesaver, you mean that it helps people in a very important way, often in a way that is important to their health.
  1. The cervical smear test is a lifesaver.
     宫颈涂片检查能够帮上大忙。

英英释义

noun

• a life preserver in the form of a ring of buoyant material
  Synonym:life buoylife beltlife ring
• an attendant employed at a beach or pool to protect swimmers from accidents
  Synonym:lifeguard

双语例句

• Nephrology and Dialysis For Your PDA-Free medical downloads can be a real lifesaver for many people.
  肾脏透析你的PDA和免费医疗，可以下载很多人真正救人。
• No! You are not my lifesaver!
  你不是啦！
• The girl was so impressed with my courage and bravery that she called me her hero and lifesaver.
  那女生对我的勇猛印象深刻，直说我是她的英雄救星。
• Ex: David wanted to be a lifesaver but he couldn't swim!
  戴维想当救生员，可他不会游泳！
• If this happens, the fsck command can be a lifesaver!
  如果发生这种状况，那么fsck命令可以用来救急！
• SGML: A lifesaver in a sea of electronic documents
  SGML：在电子文档海洋中的救生圈
• The money that flows back from those who left, most often for Russia or Italy, is a lifesaver.
  从那些奔赴他乡（通常奔赴俄罗斯或意大利）的人寄回的钱都是救命钱。
• If you are unsure of what a sign means, or have any other questions about beach safety, ask the nearest surf lifesaver or lifeguard.
  如果你不明白某个标志的意思，或者有其它关于海滩安全的问题，请向海滩救生员询问。
• Mike: You could be my lifesaver and help me then.
  迈克：你真是我的救命草，那么快帮帮我。
• This one is a lifesaver of sorts, with the compiler deducing the proper type for a variable from its initializer expression.
  编译器能够根据变量的初始化器（initializer）表达式推导出正确的变量类型，这个特性可以节省时间。