So then of the energy that does get to the wheels, only an eighth of it, half of that, goes to heat the tires on the road, or to heat the air the car pushes aside.
接着能量才开始驱动车轮 只占总能量的1/8，其中一半还转化为轮胎摩擦地面的热量 或者是汽车排放的热气