sliding gear drive

例句：

1. 1.The new car has a sliding gear drive that makes it easy to change gears.
   这款新车配备了滑动齿轮驱动，使得换挡变得非常容易。
2. 2. The old machine used a gear drive that was very reliable.
   那台旧机器使用了非常可靠的齿轮驱动。
3. 3. The engineer designed the gear drive to be compact and efficient.
   工程师设计了一款紧凑且高效的齿轮驱动。