Its wings not only beat up and down, but also twist at specific angles.

它的翅膀不但可以上下拍打而且能够在一定角度内翻转。

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Next Tuesday, I will fly over to Los Angles. But my heart is flying in the sky now with a pair of happy wings!

下周二，我将乘上飞往洛杉矶的飞机启程，而我的心已经乘上快乐的翅膀在空中飘起来了！

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Areoles spaced far apart in notches along wings or angles.

小窠在翅或角上的凹缺上相隔较远地分布。

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The B-1B has a "variable-geometry" or swing-wing design: The wings are swept forwards, almost at right angles to the body, for take-off and landing and cruising.

BBC: Profile: B-1 bomber

Its wings not only beat up and down, but also twist at specific angles.

FORBES: Festo Builds a Robot Bird

Glasgow's best offensive options lay out wide in the pace of Evans and the fine angles being cut by Hefin O'Hare, but the visitors struggled to get the ball to the wings with any space to work in.

BBC: Cardiff Blues 27-9 Glasgow