servant brake

例句：

1. 1. The car's service brake is not working properly.
   这辆车的服务制动器工作不正常。
2. 2. The mechanic had to replace the servicing brake on the car.
   这位机械师不得不更换了汽车的服务制动器。
3. 3. During maintenance, the technician checked the servicing brake of the engine.
   在维护期间，技术员检查了发动机的服务制动器。