machine assembler

例句：

1. 1. The machineassembler was responsible for assembling the new machine.
   机器装配工负责组装新机器。
2. 2. The mechanician fixed thecar's engine and made it runsmoothly.
   机械师修理了汽车的引擎，使汽车运行顺畅。
3. 3. Themechanican was busy fixingthe broken parts of the oldcar.
   机械师忙于修理旧车的损坏部分。