engine hand

例句：

1. 1. He is an experienced engine hand who can fix any mechanical issue.
   他是一位经验丰富的发动机操作员，能够解决任何机械问题。
2. 2. The engineer hand was responsible for designing the new car's engine.
   工程师负责设计新汽车的发动机。
3. 3.The mechanic was called in to fix the engine of the car that broke down on the highway.
   一名技师被召来修理在高速公路上抛锚的汽车的发动机。