We all want to live in safer cities.

我们都希望住在比较安全的城市里。

《牛津词典》

A safer alternative is exercise, such as taking a long walk.

更安全的选择是锻炼，比如散步。

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But the right amount of stress makes us more efficient, healthier and safer.

但是适量的压力会让我们更有效率、更健康、更安全。

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Mister Sumrall says NASA estimates the new Ares One will be twenty to thirty times safer than the Space Shuttle.

VOA: special.2009.12.30

I think the smallpox vaccine we made now would probably be better, more effective, and safer than the vaccines we made in the '50s.

我相信若我们现在制造天花疫苗,应该会比五十年代的更有效更安全

耶鲁公开课 - 生物医学工程探索课程节选

And if you stay out here, then you know, you're kind of a little more safer,

如果你呆在这儿，你就稍微安全一点，

圣莫妮卡和洛杉矶 - SpeakingMax英语口语达人

The ruling Green Party said the limit will make the roads safer for pedestrians and cyclists.

BBC: Brighton and Hove city centre 20mph scheme starts

According to the FAA, the system will make air travel faster, safer and cheaper.

BBC: The futurist: The US�� new air traffic control system

Depending on your willingness to take risk, you could own bigger, safer stocks or smaller, riskier ones.

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