In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing-like membrane.

翼龙的每个前肢都有一根长长的第四指，支撑着像翅膀一样的膜。

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In addition, a lot of insects and invertebrates keeps the wing membrane and color characteristic.

此外，许多许多昆虫和无脊椎动物还保存了翅膜和颜色特征。

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Depending on the special wing membrane structure, wing outfit flight can make human being flying freely in the sky with bird-like wings.

翼装飞行能够实现，主要得益于翼装特有的翼膜构造，就像给人插上鸟一样的翅膀，可以在空中飞翔。

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