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V-ERG
(使)飄動;擺動;抖摟
If something such as a piece of cloth or paper flaps or if you flap it, it moves quickly up and down or from side to side.
例句
Grey sheets flapped on the clothes line...
灰色的床單在晾衣繩上飄來擺去的。
They would flap bath towels from their balconies as they chatted.
他們聊天時會在陽臺上抖摟浴巾。
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V-ERG
振(翅);揮(翅);(翅膀)拍打，抖動
If a bird or insect flaps its wings or if its wings flap, the wings move quickly up and down.
例句
The bird flapped its wings furiously...
鳥兒使勁地撲打著翅膀。
A pigeon emerges, wings flapping noisily, from the tower.
一只鴿子從塔里鉆出來，撲撲地拍打著翅膀。
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VERB
揮動，舞動(手臂)
If you flap your arms, you move them quickly up and down as if they were the wings of a bird.
例句
...a kid running and flapping her arms.
邊跑邊揮舞著手臂的小孩子
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N-COUNT
(布、皮等)扁平下垂物,垂下的部分
A flap of cloth or skin, for example, is a flat piece of it that can move freely up and down or from side to side because it is held or attached by only one edge.
例句
He drew back the tent flap and strode out into the blizzard.
他拉開帳篷的門簾，大步走進暴風雪中。
...a loose flap of skin.
耷拉著快要掉下的一塊皮
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N-COUNT
(飛機的)襟翼，副翼，阻力板
A flap on the wing of an aircraft is an area along the edge of the wing that can be raised or lowered to control the movement of the aircraft.
例句
...the sudden slowing as the flaps were lowered.
襟翼放下時的突然減速
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N-COUNT
(鳥翼、布條、紙片的)拍打聲，拍動，拍打
A flap is a sudden noise or movement made by a bird's wing or by a piece of paper or cloth when it flaps.
例句
Nothing to be heard but the soft flap of a silk banner.
萬籟俱寂，只有一面綢制旗子輕輕飄動的響聲。
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N-SING
激動;焦慮;驚慌
Someone who is in a flap is in a state of great excitement, worry, or panic.
例句
Why did people get in a flap over nuclear energy?...
為什么人們對核能惶恐不安呢？
Wherever he goes there's always a flap.
無論他到哪里，都會引起一陣騷動。
Noun
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""there was a terrible flap about the theft"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
Verb
1. move in a wavy pattern or with a rising and falling motion;
"The curtains undulated""the waves rolled towards the beach"2. move noisily;
"flags flapped in the strong wind"3. move with a thrashing motion;
"The bird flapped its wings""The eagle beat its wings and soared high into the sky"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