When faced with a big challenge where potential failure seems to hide at every corner.

当面对一个巨大的挑战时，潜在的失败似乎无处不在。

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The world hasn't faced such a big challenge since World War II.

自二战以来，世界从未面临过如此大的挑战。

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When faced with a big opponent or a big challenge, we might assume that we will lose out.

当我们面对一位强大的敌人或是一项严峻的挑战时，我们可能会预见到失败。

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In producing applications for mobile phones, independent software developers historically have faced a big challenge: how to write software that works across phones without buying every device and testing their software on it.

WSJ: RIM Offers Testing for Phone Software

This is as big a challenge as we've ever faced.

NPR: Nation's Obesity Problem Puts Strain On Health Care Costs

Mr Watkins, a member of the Premier League legal advisory group, said the challenge for Uefa would be when it was faced at some stage with potentially excluding a big club from one of its competitions.

BBC: Premier League clubs 'can meet Uefa financial rules'