undulates
动词 undulate:
stir up (water) so as to form ripples
同义词:ripple, ruffle, riffle, cockle, undulate
occur in soft rounded shapes
同义词:roll, undulate
move in a wavy pattern or with a rising and falling motion
同义词:roll, undulate, flap, wave
increase and decrease in volume or pitch, as if in waves
同义词:undulate