flapping
名词 flapping:
the motion made by flapping up and down
同义词:flap, flutter, fluttering
动词 flap:
move in a wavy pattern or with a rising and falling motion
同义词:roll, undulate, flap, wave
move noisily
同义词:flap
move with a thrashing motion
move with a flapping motion
make a fuss; be agitated
pronounce with a flap, of alveolar sounds
同义词:flap