传动箱

例句：

1. 1. The transmission isa critical component of the car'sengine.
   传动装置是汽车发动机的关键部件。
2. 2.The gearbox is responsible for convertingthe engine's power to the wheels.
   齿轮箱负责将发动机的动力转换为车轮的动力。
3. 3. The transmission system in this car isdesigned to improve fuel efficiency.
   这款车的传动系统设计用于提高燃油效率。