ma·chin·ist /məˈʃinɪst/
  機械師,機械安裝修理工,機械工
  Ma·chin·ist, n.
  1. A constructor of machines and engines; one versed in the principles of machines.
  2. One skilled in the use of machine tools.
  3. A person employed to shift scenery in a theater.
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  machinist
       n : a craftsman skilled in operating machine tools [syn: mechanic,
            shop mechanic]