flap
美[flæp] v.上下或左右移动、摆动；轻拍；振翅而飞
网络皮瓣；翻门；翻板阀；瓣
1 . They would flap bath towels from their balconies as they chatted.
他们聊天时会在阳台上抖搂浴巾。
来自柯林斯例句
2 . Why did people get in a flap over nuclear energy?
为什么人们对核能惶恐不安呢？
来自柯林斯例句
3 . He drew back the tent flap and strode out into the blizzard.
他拉开帐篷的门帘，大步走进暴风雪中。
来自柯林斯例句
4 . She folded up her letter, licking the envelope flap with relish.
她把信折好，用力舔了舔信封的折口。
来自柯林斯例句
5 . Nothing to be heard but the soft flap of a silk banner.
万籁俱寂，只有一面绸制旗子轻轻飘动的响声。
来自柯林斯例句
1.any broad thin and limber covering attached at one edge; hangs loose or projects freely;
he wrote on the flap of the envelope
2.an excited state of agitation;
he was in a dither
3.the motion made by flapping up and down
4.a movable piece of tissue partly connected to the body
5.a movable airfoil that is part of an aircraft wing; used to increase lift or drag
1.move in a wavy pattern or with a rising and falling motion;
The curtains undulated
2.move noisily;
flags flapped in the strong wind
3.move with a thrashing motion;
The bird flapped its wings
4.move with a flapping motion;
The bird's wings were flapping
5.make a fuss; be agitated
6.pronounce with a flap, of alveolar sounds