Cygnus olor mute swan疣鼻天鹅
Mute Swan Cygnus olor疣鼻天鹅
同义词：Cygnus olor
N（名词） a Eurasian swan, Cygnus olor, with a pure white plumage, an orange-red bill with a black base, and a curved neck 白天鹅 → compare whistling swan