genus Polioptila英美[网络] 脊髓灰质炎属网络双语例句Any of several tiny North American birds of the genus polioptila, having bluish-gray and white plumage, a long tail, and a small, slender bill.蚋鹩一种灰翼莺属的北美洲小鸟,具有蓝灰色间白的羽毛,长尾和小而细的喙。