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  1. pneumatic drill

    • IPA[njuːˌmatɪk ˈdrɪl]

    英式

    • n.
      a large, heavy mechanical drill driven by compressed air, used for breaking up a hard surface such as a road.
    • noun: pneumatic drill, plural noun: pneumatic drills

    • 更多解釋
    • IPA[n(y)o͞oˈmadik dril]

    美式

    • n.
      a large, heavy mechanical drill driven by compressed air, used for drilling into hard materials ...

    Oxford American Dictionary