v.嗄嗄叫；发牢骚；死
n.呱呱声；哇哇声
A bullfrog was croaking in the distance. 一只牛蛙在远处呱呱地叫。
Frogs began to croak with the rainfall. 一下雨青蛙就开始呱呱地叫起来。
Everyone seemed rather out of sorts and inclined to croak. 每个人似乎都有点不对劲，想发发牢骚。
用作名词 (n.)He sat on the playground listening to the distant croak. 他坐在操场上，聆听远处的蛙鸣。
