worm reverse gear

例句：

1. 1. The car'sengine has a worm reverse gear tohelp it run smoothly.
   这辆车的引擎有一个蜗杆来帮助它平稳运行。
2. 2.The machine uses a worm reverse gearto reduce the speed of its rotation.
   这台机器使用蜗杆来降低其旋转速度。
3. 3. The engineer designed the wormreverse gear to improve efficiency in the manufacturingprocess.
   工程师设计了蜗杆来提高制造过程的效率。