Now you deliberately seek out difficult and complex challenges that you only dared to dream about in the past.

现在你刻意的去寻找困难而复杂的挑战，在过去你只敢去梦想它们。

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But the field now challenges the idea that there is only a conscious will.

但仅有‘有意识的意志’这种想法正受到我们的研究领域的挑战。

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In the course of our history, only a handful of generations have been asked to confront challenges as serious as the ones we face right now.

在我们的历史上，只有少数几代人被要求面对如考此前所未有的严重挑战。

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As this special report will explain, the changes now under way will pose huge challenges not only to governments but also to employers and individual workers.

ECONOMIST: The great mismatch

Now, these are the challenges that we can only solve together, and that's been our approach to the unique challenges facing Indian country.

WHITEHOUSE: Remarks by The President at the Tribal Nations Conference

Creators now need to fill in a Risks and Challenges assessment, not only to help backers understand what might go wrong and how well qualified the creator is to deal with such problems, but also to make creators think about worst case scenarios.

FORBES: Kickstarter: Dream Maker Or Promise Breaker?