Anything broad and flat hanging loosely, as the tail of a coat.

宽扁之悬挂物(如西装垂尾)。

The motion or noise of anything broad and flat.

扑拍；拍打(之声)。

A slap.

掌掴。

A hinged section, as on the wings of an airplane, used to increase lift or decrease speed.

【空】(飞机的)襟翼。

To move (wings, the arms, etc.) vigorously up and down, esp. with a muffled slapping sound; beat.

上下摆动(翅膀、手臂)。

To strike with something flat or flexible.

拍打；鼓动。

To move to and fro.

左右摆动。

To move, as wings, with noise.

(翼等)拍动发出声响。