Yahoo奇摩字典 網頁搜尋

登入
  1. 更多

搜尋結果

  1. Oxford American Dictionary

    pectoral fin

    • IPA[ˈpekt(ə)rəl fin]
    • n.
      each of a pair of fins situated on either side just behind a fish's head, helping to control the direction of movement during locomotion. They correspond to the forelimbs of other vertebrates.

    • noun: pectoral fin, plural noun: pectoral fins