clutch block

例句：

1. 1.The car's engine is running smoothly because the clutch block was replaced recently.
   汽车的引擎运行顺畅，因为离合器块最近被更换了。
2. 2. The mechanic checked the clutch block and found no signs of wear.
   机械师检查了离合器块，没有发现磨损的迹象。
3. 3.The clutch block is essential for maintaining smooth gear shifting in a car.
   离合器块对于保持汽车齿轮切换平稳至关重要。