Wasp and fly wings are made from two compressed layers of transparent chitin, with light bouncing off both layers and mixing to produce color.

果蝇和黄蜂的翅膀其实是由两层压缩的透明甲壳质组成，每层甲壳质都能够在内部对光线进行折射，从而产生出各种色彩。

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Wings help birds fly.

翅膀帮助鸟飞翔。

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The wings of the chicken have become vestigial; it can no longer fly.

鸡的翅膀逐渐退化， 不会在空中飞行了。

《新英汉大辞典》

Ben decided to take the bird home and fix its broken wings so that it could fly again.

VOA: special.2010.03.20

"The best way to get a jump-start is to fly on the wings of larger players, " says youngest sibling Rajan Mittal, articulating the brothers' philosophy.

FORBES: Magazine Article

Help a woman spread her wings and fly by becoming a volunteer mentor today!

FORBES: How Becoming A Mentor Can Boost Your Career

Before that money can materialise, however, Washington state's members of Congress must stop squabbling, which may happen at about the same time as salmon sprout wings and fly over the dams.

ECONOMIST: Water in the West (2)