any of various ducks of especially bays and estuaries that dive for their food
双语例句
Common North American diving duck is considered a variety of the European goosander. 美洲普通潜水鸭，被认为是欧洲普通秋沙鸭的变种。
Any of various diving ducks of the genus Aythya,especially A. ferina of Europe and Asia,which has gray and black plumage and a reddish head. 潜鸭，一种潜鸭属潜水鸭，尤指产于欧洲和亚洲的红头潜鸭，它有灰黑色的羽毛和浅红色的头。
