flap
n. 片状悬垂物;拍打,拍动;(飞机的)襟翼;<非正式>混乱,激动;<美>群众愤怒,大众批评
v. <非正式>激动,紧张;摆动,拍打
复数 flaps
第三人称单数 flaps
现在分词 flapping
过去式 flapped
过去分词 flapped
例句
The flap of the envelope had come unstuck.
信封的封口没粘牢张开了。
《牛津词典》
She gets in a flap over the slightest thing.
极小的事也能令她不安。
With a flap of its wings, the bird was gone.
鸟振翅飞走了。