noun 下载 🔗分享 哑天鹅, 大天鹅 A white swan, Cygnus olor, found throughout Europe and much of Asia, having a distinctive orange bill with a black tip; it is not actually mute, but is not very vocal. Examples : "While mute swans are known for their graceful appearance on the lake, they can hiss loudly if you get too close to their young. " 虽然哑天鹅以在湖面上优雅的身姿而闻名，但如果你靠它们的幼崽太近，它们会发出响亮的嘶嘶声。 animal bird nature biology environment 与AI对话词汇游戏阅读练习
