Gravity racer
01
重力赛车, 重力车
a non-motorized vehicle typically used in downhill racing, relying solely on gravity for propulsion
例子
The annual gravity racer competition drew participants from around the world to test their homemade vehicles on the steep hills of the countryside.
一年一度的重力赛车比赛吸引了来自世界各地的参与者，在乡村的陡峭山坡上测试他们的自制车辆。
He built his own gravity racer from scratch, carefully designing it to maximize speed and stability on the winding race course.
他从零开始建造了自己的重力赛车，精心设计以在蜿蜒的赛道上最大限度地提高速度和稳定性。
