For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.

例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。

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So he forced himself to wait until he would be close enough to leap off and grab the boys.

所以，他强迫自己等待，等到离孩子足够近的时候，他再一跃而下—把将他们抓住。

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I like good strong words that mean something, replied Jo, catching her hat as it took a leap off her head preparatory to flying away altogether.

“我喜欢使用语义强烈的词语”，乔一边回答，一边牢牢抓着自己的帽子，那顶帽子在她脑袋上蹿了一下，好象随时准备飞走一样。

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And Snipes is just amazing: everything he does seems to leap off the screen.

NEWYORKER: White Men Can��t Jump

In 2010, South Korean researchers successfully created 3-D animated children's e-books in which characters leap off the page technology which could soon find commercial applications.

WSJ: Enhanced E-Books: Blowing Up the Book

She wanted to leap off a boat and swim with them.

NEWYORKER: Deniers