elastic wheel

例句：

1. 1. Theengineer designed an elastic wheel to reduce frictionbetween the gears.
   工程师设计了一个弹性轮来减少齿轮之间的摩擦。
2. 2. The car's engine is powered by an elasticwheel that converts mechanical energy into electricalenergy.
   汽车的引擎由一个弹性轮驱动，将机械能转化为电能。
3. 3. Thenew design uses an elastic wheel to improvefuel efficiency and reduce emissions.
   新设计使用了弹性轮来提高燃油效率并减少排放。