pivot edge

例句：

1. 1. The pivot edge of the table is perfect for holding a vase.
   桌子的支点边缘非常适合放置花瓶。
2. 2. The engineer used a pivot edge to adjust the angle of the machine.
   工程师使用一个支点边缘来调整机器的角度。
3. 3. The car's pivot edge was designed to reduce vibration and noise.
   汽车的支点边缘被设计用来减少振动和噪音。