patagium

Having no marsupial pouch, the mother presses the patagium into service.

但是它们没有像有袋动物育儿袋，这时猫猴妈妈翼膜就派上用场了。

The gecko has a patagium that allows it to parachute orglide down from its tree top home.

这种壁虎拥有翼膜，以让自己从树顶巢降落或滑翔下去。