trumpeter swan 中文意思是什麼
trumpeter swan
解釋
號手天鵝-
A trumpeter swan glides across the surface of the yellowstone river. trumpeter swans once faced extinction ; today their numbers are rebounding
一隻號聲天鵝滑過黃石河河面。號聲天鵝一度瀕臨滅絕,不過現在,它們的數量正有所上升。
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