overhauler

例句：

1. 2.
   汽车
2. 3.
   铁路
3. 1. The overhauler was responsible for the entire repair process.
   检修员负责整个修理过程。
4. 2. The overhauler had to fix all the faults in the car.
   检修员必须修复汽车的所有故障。
5. 3. The overhauler was busy fixing the old cars at the garage.
   检修员在车库忙着修理旧车。