bushing replacer

例句：

1. 1. The machine is designed to replace the old bushing with a new one.
   这台机器的设计是为了用新的代替旧的垫圈。
2. 2. The technician replaced the worn-out bushing with a new one.
   技术员用一个新的替换了磨损的垫圈。
3. 3. The bushing was used to protect the shaft from wear and tear.
   这个垫圈用来保护轴免受磨损。