crankpin bush

例句：

1. 1. The car's engine isrunning smoothly, and the crankpinbush is not causing any problems.
   汽车的引擎运行平稳，曲柄销子没有造成任何问题。
2. 2. The mechanic checked the crankpin bush and found that it wasworn out.
   机械师检查了曲柄销子，发现它已经磨损了。
3. 3. Thecrankpin bush is a critical componentof the car's engine, andany damage to it can affect the performanceof the engine.
   曲柄销子是汽车引擎的关键部件，任何损坏都会影响引擎的性能。