We were part of an entire regiment that had nothing else to do but to keep that motorway open.

我们是整个团的一部分，这个团无其他任务,只是保证公路畅通。

《柯林斯英汉双解大词典》

Sometimes to take the lead is easy, but to keep it is hard.

有时候，领先很容易，但要保持领先就很难了。

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Keeping is harder than winning.; To start a business is difficult, but to keep it going is more difficult.

创业难守业更难。

《新英汉大辞典》

She wonders what else they can do. For now,the Mahmoud family and others have no choice but to keep containers ready for the days when water does flow through the taps.

VOA: standard.2009.08.01

It is not to bind them from voluntary actions but to direct and keep them in such motion as not to hurt themselves by their own impetuous desires, rashness or indiscretion as hedges are set not to stop travelers but to keep them on their way."

不是约束他们去做本该做的事,而是约束他们不做不该做的事,以免因自己的欲望，轻率，鲁莽而危机自身，这就像是篱笆的功能一样,不是要阻挡行路而是为小路指引方向“

耶鲁公开课 - 政治哲学导论课程节选

You can adapt it for any sort of possible purpose, but the crucial thing is to keep the distinction between meaning and significance clear."

你可以为任何目的将其改编，但重要的是你必须,将意思和意义分清楚“

耶鲁公开课 - 文学理论导论课程节选

And companies want consumers not only to see their ads, but to keep the buzz going.

FORBES: The Super Bowl Ads You Can't Miss

But to keep Chancellor shareholders happy, he needs to keep TV out of the mix.

FORBES: Follow through

Money is spent not according to the country's development needs, but to keep him in power.

ECONOMIST: An unappetising choice | The