n. a small wave on the surface of a liquid
n. (electronics) an oscillation of small amplitude imposed on top of a steady value
v. stir up (water) so as to form ripples
v. flow in an irregular current with a bubbling noise
n. 涟波, 涟漪, 波纹, 粗钢梳
vt. 使起涟漪
vi. 起微波, 起潺潺声