有齿轮的

例句：

1. 1. The car's engine is running smoothly because the gears are all in place.
   汽车的引擎运行顺畅，因为所有的齿轮都安装到位了。
2. 2. The old clock had a gear that could be turned to set the time.
   旧时钟有一个可以转动的齿轮来设置时间。
3. 3. The farmer used a big gear to turn the plow.
   农民用一个大齿轮来转动犁。