maintenance overhaul

• 维修,保全

maintenance overhaul的用法和样例：

例句

1. The machinery requires constant maintenance.
   这些机器需要经常保养维修。
2. Maintenance of PC is in my element.
   我对电脑的维修保养很在行。
3. He took a course to learn about car maintenance.
   他学习了汽车保养的课程。
4. The machinery requires constant maintenance.
   这些机器需要经常保养维修。