disconnecting apparatus and disengaging gear

例句：

1. 1. The engineer used a special tool to disconnect the disconnecting apparatus.
   工程师使用特殊工具来断开断开装置。
2. 2. The technician had to disengage the gear before they could start their machine.
   技术人员在开始他们的机器之前必须脱开齿轮。
3. 3. The car was repaired by replacing the disconnecting apparatus and the disengaging gear.
   汽车被修理了，更换了断开装置和脱开齿轮。