flapping

名词 flapping:

1. the motion made by flapping up and down
   同义词：flap, flutter, fluttering

动词 flap:

1. move in a wavy pattern or with a rising and falling motion
   同义词：roll, undulate, flap, wave
2. move noisily
   同义词：flap
3. move with a thrashing motion
   同义词：beat, flap
4. move with a flapping motion
   同义词：beat, flap
5. make a fuss; be agitated
   同义词：dither, flap, pother
6. pronounce with a flap, of alveolar sounds
   同义词：flap

1. The movement or sound of repeated flapping.
   啪嗒啪嗒的动作，吧嗒吧嗒声反复拍击的动作或声音
2. The sails were flapping gently in the wind.
   船帆随风摆动。
3. The curtains were flapping at the open window.
   窗帘在敞开的窗户前摆动。