drive gear box

例句：

1. 1. The car'sengine is a complex system that includes thedrive gear box.
   汽车的发动机是一个复杂的系统，包括驱动齿轮箱。
2. 2. The engineerhad to replace the drive gear box dueto wear and tear.
   工程师不得不因为磨损而更换驱动齿轮箱。
3. 3. Thenew design of the gearbox has improved efficiency significantly.
   新型齿轮箱的设计大大提高了效率。