Most critters bounce on the balls of their feet, think cats and dogs, while others trot on their toes, like horses and deer.

但是多数家畜用脚掌弹跳，想想猫跟狗，然而其他动物是用脚趾小跑，比如马跟鹿。

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Think about this story when someone steps on your feet and you want to argue with him.

当有人踩了你的脚，你想和他争论时，想想这个故事。

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Interviewers often ask these oddball questions to see how quickly you can think on your feet and whether you can avoid becoming flustered.

——面试官问这种奇怪的问题，是想看看你遇到特殊情况的反应有多快，或是看看你如何让自己不显得狼狈。

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Romney handled these attacks well but faltered when he had to think on his feet on a few occasions, specifically when Rick Santorum challenged him on subject of felons being able to vote again after they complete their sentences and probation.

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They can also think on their feet, and if the plan requires modifying, then so be it.

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"They think on their feet when faced with these challenges, " he says.

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