详细解释:n. 呱呱叫的动物, 黄花鱼, 预报凶事者, 发牢骚者, 鸣冤者, 悲观者
英语解释：
名词 croaker:
the lean flesh of a saltwater fish caught along Atlantic coast of southern U.S.any of several fishes that make a croaking noise详细解释：
croak.er
n.（名词）
A croaking animal, especially a frog.蛙：呱呱叫的动物，尤指蛙A person who grumbles or habitually predicts evil.预报凶事者，发牢骚者：发牢骚的人或经常预料凶事的人Any of various fishes, chiefly of the family Sciaenidae, that make croaking or grunting sounds.石首鱼：任一种主要属于石首鱼科的鱼类，能发出呱呱声或咕哝声