Yahoo奇摩字典 網頁搜尋

  1. nitrogen cycle

    英式

    • n.
      the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
    • noun: nitrogen cycle, plural noun: nitrogen cycles

    • 更多解釋
    • IPA[ˈnītrəjən ˈsīkəl]

    美式

    • n.
      the series of processes by which nitrogen and its compounds are interconverted in the ...

    Oxford American Dictionary