road spring

例句：

1. 1. The road spring is designed to absorb shock and provide a smooth ride.
   公路弹簧设计用来吸收冲击并提供平稳的乘坐体验。
2. 2. The car's suspension system relies on the road spring to keep it in balance.
   汽车的悬挂系统依靠公路弹簧来保持平衡。
3. 3.The new model has a more sophisticated design that incorporates a road spring for improved handling.
   新款模型采用了更复杂的设计，其中包括一个改进的操控性的公路弹簧。