Children are ready to test their limits every day in many fields, including music.

孩子们每天都准备在各个领域内冲刺极限，包括音乐。

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If the children did well because they worked hard, they wanted problems that would test their limits and teach them how to do even better.

如果孩子因为勤奋而做的很好，他们就希望难题来弥补自己的不足并且告诉他们该如何做得更好。

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Just to be sure, though, she is now considering consecutive transplants in mice, in order to test the miraculous rejuvenating powers of the ovary to their limits.

但为了安全起见，她正考虑在老鼠身上进行一连串的移植实验，以便测试卵巢神奇的永葆青春的能力的极限。

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Over the years, a diverse caravan of novice runners, amateur athletes, enthusiastic 16-year-olds, spry septuagenarians and even visually impaired and partially paralyzed people have all converged on the MDS to test their limits, mark an occasion or escape briefly from their regular lives.

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