easing gear

例句：

1. 1. The new model car has a easing gear system that makes driving more comfortable.
   新款汽车拥有一个缓和的齿轮系统，使得驾驶更加舒适。
2. 2.The old machine had a rough gear, which made it difficult to operate.
   旧机器有粗糙的齿轮，操作起来很困难。
3. 3.The engineer adjusted the easing gear to make the machine run more smoothly.
   工程师调整了缓和的齿轮，使机器运行得更加平滑。