The challenge for local and national governments is to manage tourism so that communities can benefit economically, and yet at the same time, make sure that the tourist areas are kept for all to enjoy.

地方和国家政府面临的挑战是管理旅游业，使社区能够在经济上受益，同时确保所有人都能享受到旅游区。

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In the past few years, Math Counts added two new middle school programs to try to diversify its participant pool—the National Math Club and the Math Video Challenge.

在过去的几年里，数学竞赛 Math Counts 增加了两个新的中学项目（国家数学俱乐部和数学视频挑战），试图使其参与者群体多样化。

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Another challenge is establishing and strengthening national monitoring systems that provide data on all children.

另一项挑战是建立和加强国家监测系统，掌握所有儿童的相关数据。

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And that is a major challenge." Larry Graham,president of the National Confectioners Association in Washington, represented industry groups at the launch of the framework.

VOA: special.2010.10.26

The national security challenge comes at a difficult time for Mr.Obama, who later this month will mark his first year in office.

VOA: standard.2010.01.06

Even if U.S.economic output expands in 2010 and more Americans head back to work, both critics and supporters of the president say the nation faces a more serious challenge to future economic viability: a rapidly growing deficit and a national debt estimated at more than $12 trillion.

VOA: standard.2010.01.15

Corruption is a national challenge that is felt in every corner of Congolese society.

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Whatever its intentions, the National Challenge was now associated with a focus on failure and closure.

BBC: Primary schools face Sats threat

But perhaps the greatest national challenge is ratcheting up the quality of the public education workforce.

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