scrannel

例句：

1. 1.The car has a large scrannel on the back that helps it move forward.
   汽车后部有一个大的滑轮，帮助它前进。
2. 2. The farmer used a scrannel to lift the heavy load onto his cart.
   农民使用了一个滑轮来将沉重的货物抬到他的车上。
3. 3. The scrannel is responsible for transmitting power from the engine to the wheels.
   滑轮负责将发动机的动力传输到车轮上。