flap

• 指沿一边固定的扁平材料片，常用于遮盖开口、开口的盖片，或可前后/上下摆动的活动片。

A noun referring to a flat piece of material attached along one edge, often used to cover an opening or to move back and forth.

1. B1formal

   A flat piece of material attached along one edge, often used to cover an opening.

   翻板

   • He lifted the flap of the tent to enter.
   • The envelope has a sticky flap for sealing.
   • She adjusted the flap on her jacket pocket.

   同义词coverlidtab

2. Motion or soundB1informal

   A quick, flapping motion or the sound made by something moving loosely.

   拍动或拍打声

   • The bird took off with a flap of its wings.
   • The flag made a loud flap in the wind.
   • He heard the flap of the sail against the mast.

   同义词beatingflappingflutterrustleswishwaving

3. State of agitationB2informalbritish

   A state of excitement, worry, or confusion.

   慌乱状态

   • She was in a flap about the upcoming exam.
   • There was a flap at the office when the news broke.
   • Don't get into a flap over such a small problem.

   同义词agitationbothercommotionditherflusterfusspanicstewsweattizzy

   反义词calmcomposurepeaceserenitytranquility

• 动词，指某物上下或前后摆动、拍打，通常指带有宽大扁平表面的物体；也指处于激动、慌乱或恐慌的状态。

A verb used to describe the action of moving something up and down or back and forth, typically with a broad, flat surface, or to be in a state of agitation or panic.

1. Move up and downA2formal

   To move something, especially wings or arms, up and down or from side to side.

   拍打

   • The bird flapped its wings and flew away.
   • He flapped his arms to get the attention of the crowd.
   • The flag flapped in the strong wind.

   同义词beatflailflutterwave

2. Panic or become agitatedB2informalbritish

   To become nervous, worried, or agitated, often unnecessarily.

   慌张

   • Don't flap; we still have plenty of time to catch the train.
   • She started flapping when she realized she lost her keys.
   • He was flapping about the presentation all morning.

   同义词fusspanicworry

短语动词变体flap down