One great challenge for the U.S. economy is slack domestic consumer demand.

美国经济面临的一大挑战是国内消费需求疲软。

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Besides, carrying everything to the building site was a great challenge for over 2,000 workers.

此外，对2000多名工人来说，把所有东西搬到建筑工地是一项巨大的挑战。

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I think it is a great challenge to learn the language well.

我认为学好语言是一个很大的挑战。

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Writer-director Richard Linklater believes any moviemaker would be daunted by the challenge of telling the story of the man behind the great American film Citizen Kane;

VOA: standard.2009.12.17

You prepare yourself to come back and accept a great challenge, and here it is.

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"This fire has been a great challenge, there's no two ways about it, " he said.

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Education constitutes another great challenge as it is characterised by significant gender and income inequalities.

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