Yahoo奇摩字典 網頁搜尋

登入
  1. 更多

  1. Oxford Dictionary

    river dolphin

    • n.
      a solitary dolphin with a long slender beak, a small dorsal fin, and very poor eyesight. It lives in rivers and coastal waters of South America, India, and China, using echolocation to find its prey.

    • noun: river dolphin, plural noun: river dolphins