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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So it was an opportunity for them to challenge themselves.

对他们来说，这是挑战自我的机会。

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To challenge competition, challenge the pressure, to challenge themselves.

向竞争挑战，向压力挑战，更要向自己挑战。

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So it was an opportunity for them to challenge themselves.

对他们来说,这是挑战自我的机会。

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He even says councils should challenge themselves to create a new perception of themselves.

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Gain that trust and you get a shot at persuading people to challenge themselves.

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People with a base level of fitness can challenge themselves by performing exercises on an unstable surface.

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