double sided gear drive

例句：

1. 1. The car has a double-sided gear drive that makes it easy to change gears.
   这辆车有一个双面齿轮驱动，使得换挡变得很容易。
2. 2. The new machine uses a double-sided gear drive to improve efficiency.
   新机器使用双面齿轮驱动来提高效率。
3. 3. The construction site had a double-sided gear drive that allowed for fast and efficient assembly.
   施工现场有一个双面齿轮驱动，可以快速且高效地组装。