The world community should not flinch in the face of this challenge.

该国际团体不应该在这一挑战面前退缩。

《柯林斯英汉双解大词典》

Many climbers want to challenge themselves in the face of difficulties.

许多登山者想在困难面前挑战自己。

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In global production chains, countries face a double challenge of maintaining an efficient chain not just for exports but also for imported inputs and components.

在全球生产链中，各国面临双重挑战，即不仅要为出口物资和零部件，也要为进口物资和零部件保持一个高效的生产链。

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However, all these heroes have a couple of points in common: all of them took initiative independently of the resources and support available, and they did not give up in the face of challenge, resistance, or discouraging circumstances.

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They join an incredibly elite list of women and men, and a long history filled with ordinary Americans doing extraordinary things -- men and women of undaunted courage, uncommon resolve, and a stubborn perseverance in the face of unfathomable challenge.

WHITEHOUSE: Vice President Biden Honors Flight 93 Memorial

Mr Scott told delegates the party does not "keel over in the face of a challenge".

BBC: Danny Alexander