I had always assumed that the reason a squirrel had a big bushy tail was that as they careened through the space between branches they used it to wave around and keep from tumbling out of control.

我一直以为，松鼠有个毛茸茸的大尾巴，是因为它们摇晃着通过树枝间的空隙时，要摇摆它，以防失控跌倒。

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This man with boundless energy and charisma is also a master of hype, hyperbole and the catchy phrase. And even when he’s trying to talk normally, brilliant verbiage comes tumbling out.

这个精力充沛魅力无限的家伙同时也是一个很会鼓动人心的激励大师，甚至在他的平常对话中，经典的语句也常常脱口而出。

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But Sacramone, 20, started off the event by falling on her second tumbling pass, then stepping out of bounds.

但已经20岁的萨克拉莫内首先出场就在第二个翻转动作时摔落在地并踩过了边线。

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Some are gawky, silly, and look somehow incomplete without clowns tumbling out of them.

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Admiral Arthur Phillip, the man who brought the First Fleet into Sydney Harbour in 1788, ended his days tumbling out of an upstairs window in England.

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"The problem is there's quite a big road round the lake and for a 300m section, the toads are tumbling out of the woods to try to get to the lake, " he said.

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