suspension lever pivot pin

例句：

1. 1.The suspension lever on the car is responsible for adjusting the height of the seats.
   汽车上的悬挂杆负责调整座椅的高度。
2. 2.The engineer used a suspension lever to lift the heavy machine.
   工程师使用悬挂杆来举起这台重机器。
3. 3.The pivot pin in the door hinge allows the door to open and close smoothly.
   门铰链中的枢轴销允许门平稳地打开和关闭。