vertical shaft

例句：

1. 1. The elevator's vertical shaft is visible through the glass ceiling.
   电梯的竖直轴通过玻璃天花板可见。
2. 2.The machine has a vertical shaft that rotates the gears.
   这台机器有一个竖直的轴，可以旋转齿轮。
3. 3.The construction site had to remove the vertical shaft to make way for the new road.
   为了修建新路，工地不得不拆除竖直的轴。