mechanic operating

例句：

1. 1. The mechanic operatedthe car with great skill.
   这位机械师以高超的技巧操作汽车。
2. 2. The machineis designed to operate automatically.
   这台机器被设计成自动运行。
3. 3. Theengineer operated the machine toensure it was functioning properly.
   工程师操作机器以确保其正常工作。