We are faced with threats from climate change, which requires us to take immediate actions.

我们正面临来自气候变化的威胁，这需要我们马上采取行动。

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We should have life-long learning in the era of Internet, which requires us to continue with study even after graduation.

在互联网时代我们应该学会终身学习，这要求我们即使在毕业后也要继续学习。

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We finish one step in every seven seconds, which requires us to concentrate and keep working and working.

我们每几秒钟完成一个工序，这要求我们精神高度集中，不停的工作。

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For New Yorkers, this is an especially poignant realization and one which requires us as citizens to become actively engaged in solutions.

CENTERFORSECURITYPOLICY: Center For Security Policy

The agency said on Friday workers "found a further crack in a sensitive location which requires us to keep the viaduct closed until the repair is complete".

BBC: M4 closure: Drivers told to stay away

It's exactly the same when people sign a declaration of peace, the Belfast Agreement when it was signed was not the end, it was the beginning of a long period of struggle which requires just as much determination from all of us to see it succeed and I believe there is a will there, certainly among the pro-agreement parties to make this succeed.

BBC: News | BREAKFAST WITH FROST | Dr John Reid MP, Secretary for Northern Ireland