clutch knob

例句：

1. 1. The car's engine is so loud that it's hard to hear the sound of the clutch knob.
   汽车的引擎声音太大了，以至于很难听到离合器旋钮的声音。
2. 2.The mechanic was able to adjust the clutch knob and fix the problem.
   机械师能够调整离合器旋钮并解决了问题。
3. 3.When driving at high speeds, it's important to pay attention to the clutch knob to avoid accidents.
   在高速行驶时，注意离合器旋钮以避免事故的发生。