Any of various large aquatic birds of the family Anatidae chiefly of the genera Cygnus and Olor, having webbed feet, a long slender neck, and usually white plumage.
天鹅：鸭科的各种大型水禽，主要是天鹅和哑天鹅属，有蹼足、长而细的脖子和通常为白色的羽毛。
Any of various large aquatic birds of the family Anatidae chiefly of the genera Cygnus and Olor, having webbed feet, a long slender neck, and usually white plumage.
天鹅：鸭科的各种大型水禽，主要是天鹅和哑天鹅属，有蹼足、长而细的脖子和通常为白色的羽毛。
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