shaft arc furnace

例句：

1. 1. The machine has a long shaft that can reach the ground.
   这台机器有一个很长的轴，可以伸到地面。
2. 2. The car's engine is located in the center of the shaft.
   汽车的发动机位于轴的中心位置。
3. 3. The engineer used a special tool to remove the old shaft and install the new one.
   工程师使用特殊的工具来移除旧的轴并安装新的轴。