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  1. Oxford American Dictionary

    telegraph key

    • IPA[ˈteləˌɡraf kē]
    • n.
      a button which is pressed to produce a signal when transmitting Morse code.

    • noun: telegraph key, plural noun: telegraph keys

    • 更多解釋

    telegraph key

    • n.
      a button which is pressed to produce a signal when transmitting Morse code.

    Oxford Dictionary