flapping

• 名词，指拍打、拍击或上下摆动的动作，通常指翅膀、手臂等的扇动，也可指这种动作发出的声音。

A noun referring to the motion or action of moving something up and down, typically wings or arms, or the sound produced by such movement.

1. Flapping motionB1formal

   The motion made by flapping up and down, typically referring to wings or loose objects.

   拍打

   • The flapping of the bird's wings was loud in the quiet forest.
   • The flag's flapping in the wind could be heard from inside the house.
   • The flapping of the tent kept him awake all night.

   同义词beatingflutterflutteringoscillationundulationwaving

• 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