And for me it's fun because I may not know the novel that you end up picking, and so it is a kind of challenge for me to take a novel that you've chosen and come to grips with it myself It may be one that I know.

我也觉得很好玩,因为我可能不知道你们最后选择的小说，所以对我来说,认真对待你们选的一本书很有挑战性,可能是一本我知道的书。

耶鲁公开课 - 1945年后的美国小说课程节选

"I started returning to the stage in my late 20s to get back in touch with my roots and to challenge myself, " he said.

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"I wanted to lose weight to challenge myself and show myself I can change, and not change for the world, " Garcia wrote in her iReport.

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As I heard that minister droning on, I made a challenge for the trophy myself.

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