motor machine

例句：

1. 1.The car's motor is running smoothly.
   汽车的发动机运行平稳。
2. 2. The new model car has a powerful motor.
   新款汽车拥有强大的发动机。
3. 3. The old steam engine was replaced by the modern motor.
   旧蒸汽引擎被现代电动机所取代。