有一种理论认为滑行节省体力。因此研究人员用飞鼯猴——一种来自东南亚的哺乳动物，当它们滑行时会伸展出四肢，变成一张巨大的翼膜。

One theory suggests gliding saves energy. So researchers tested that idea using colugos-mammals from Southeast Asia that turn into giant skin sails when they stretch out their legs.

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但是他的数字唱片却一飞冲天，由2009年的233000张飞涨至2010年的485000张。

But his digital album sales rocketed from 233, 000 in 2009 to 485, 000 in 2010.

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现在将她放在一张桌子上面或放在其他扁平的地方。她的翅膀将会突然停止拍动。当你不飞行飞仙女时请关掉开关。

Now set her down on a table or other flat place. Her wing will suddenly stop flapping. Turn the switch off when you are not playing with your fairy.

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