Yahoo奇摩字典 網頁搜尋

  1. rift valley

    • IPA[ˈrif(t) ˌvalē]

    美式

    • n.
      a large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface between nearly parallel faults or fault systems.
    • noun: rift valley, plural noun: rift valleys