With a flap of its wings, the bird was gone.

鸟振翅飞走了。

《牛津词典》

You can train it to flap its wings to escape a situation but it's very difficult to get it to flap its wings for food.

你可以训练它扇动翅膀以逃避某种情况，但要让它扇动翅膀获取食物是非常困难的。

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Furthermore, the birds orient themselves carefully with regard to the Sun and gently flap their wings to increase convection cooling.

此外，这些鸟会根据太阳的位置谨慎调整自己的方向，并轻轻拍打翅膀以增加对流的降温效果。

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You can train it to flap its wings to escape a situation but it's very difficult to get it to flap its wings for food.

你可以训练鸽子,通过扇动翅膀来脱离某个情境,但却很难通过训练鸽子扇动翅膀来进食。

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Butterflies flap their wings on the Pacific Rim and we feel the winds of deflation on Wall Street.

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It had a small wingspan and a bone structure that would have restricted its ability to flap its wings.

BBC: Eosinopteryx

However, there are always a few that prefer to skate too close to the edge, flap their wings, and create more of a market nuisance than anything else.

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