There are a vast number of good reasons to not need to run long distances.

诸多理由表明，你不必去跑长距离的路。

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You should write-protect all disks that you do not usually need to write to.

你应该对你通常不需要写入内容的磁盘进行写保护。

《柯林斯英汉双解大词典》

You need to be extra careful not to make any mistakes.

你要格外小心，别犯错误。

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They say passengers who sit for hours need to drink plenty of water not liquids that contain alcohol or caffeine.

VOA: special.2009.07.14

We need to know not only what are the primitives, but how do we make things meaningful in that language.

我们不仅需要知道什么是基本类型，还要知道我们在那种语言中,怎样使其变得有意义。

麻省理工公开课 - 计算机科学及编程导论课程节选

but we need a sense of growth, not just spending to keep us out of depression essentially

但是我们需要有增长意识，不能只是通过花钱来让我们免于陷入危机。

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In fact, if you make good prudent decisions about the big things like what you drive and where you live, it actually leaves a lot of flexibility to not need to sweat the small stuff at all.

WSJ: The Experts: Best Financial Advice for Young People Starting Out

Because Romney and Ryan only need to deny about 20% of these to collect the same tax, they do not need to commit to specifics.

FORBES: Lower Taxes, Fewer Deductions: Are Romney and Ryan Dodging the Specifics?

The victim of the second incident, who was travelling with his family, suffered a facial injury and a cut to his head but did not need to go to hospital.

BBC: Police investigate hate crimes on central Scotland trains