shifting fork

例句：

1. 1.The shifting fork is crucial for the smooth operation of the conveyor belt.
   换向叉对于输送带的顺畅运行至关重要。
2. 2. The engineer used a shifting fork to adjust the angle of the gears.
   工程师使用换向叉调整齿轮的角度。
3. 3.The shifting fork was designed to minimize wear and tear on the machine.
   换向叉的设计旨在减少对机器的磨损。