Colugos glide between trees using their patagium, or flaps of skin between their front and hind legs and extending to the tail and the neck.
鼯猴利用它们的翼膜在树之间滑翔，该翼膜是它们前后肢之间的片状悬垂物，延伸到尾巴和脖子。
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Colugos are even webbed between their toes.
鼯猴的趾间甚至都有膜。
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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.