power wheel

例句：

1. 1. The power wheel is the heart of the car's engine.
   动力轮是汽车发动机的核心。
2. 2. The power wheel allows for easy maneuvering in tight spaces.
   动力轮使得在狭小空间中操作变得容易。
3. 3. The power wheel is responsible for transmitting power from the engine to the wheels.
   动力轮负责将发动机的动力传递给车轮。