flap

飘, 摆动, 拍打, 拍打声, 片状垂悬物

any broad thin and limber covering attached at one edge; hangs loose or projects freely; the motion made by flapping up and down; a movable piece of tissue partly connected to the body; a movable airfoil that is part of an aircraft wing; used to increase lift or drag

拍打, 鼓翼而飞, 飘动