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1. Oxford Dictionary

   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

2. • 更多解釋

   pneumatic drill

   • IPA[no͞oˈmadik dril]

   美式

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

   Oxford American Dictionary