学小鸡拍打翅膀 flap
小鸟快速地拍打着翅膀 Birds flapping their wings quickly ; The birds rapidly flapping wings
翅膀拍打的 fluttering
它们用力拍打翅膀，它们身上的颜色就变成了一道彩虹。
They beat their wings very hard and the colors on them made a rainbow.
当它们停止拍打翅膀，蝙蝠就很难将它们与一片树叶或者其他什么东西区分开。
When they stop beating their wings, they'd be much harder for the bat to distinguish from a leaf or some other object.
此外，这些鸟会根据太阳的位置谨慎调整自己的方向，并轻轻拍打翅膀以增加对流的降温效果。
Furthermore, the birds orient themselves carefully with regard to the Sun and gently flap their wings to increase convection cooling.
应用推荐