lifesaver

lifesaver

[ˈlaɪfseɪvə(r)]

n.救生者，水难救生员，济急的人;

复数： lifesavers

英文例句/中文翻译：

1、

sanitation and hygiene: a cheap and highly effective lifesaver

缓解卫生与个人卫生是挽救生命的廉价且极为有效的方法

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2、

Essential for studying up before you leave and can be a lifesaver when you are there, but it should live in your backpack, not in your hand. It is a guide, not a bible, so make sure you do some of your own exploring-it's all part of the adventure.

Tip：旅行指南对旅行者的重要性不必多说，不过你也不必把它当成“圣经”，自己去挖掘一些有意思的东西——这也是冒险的一部分。

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3、

But a lifesaver when you screw up a once-in-a-lifetime photo.

但是当你搞砸了一生中唯一一张珍贵照片时，这台相机或许能够解决你的燃眉之急。

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