curve characteristic

例句：

1. 1. The car's steering wheel has a curved characteristic that makes it easy to turn the wheel.
   汽车的方向盘具有曲线特征，使得转动方向盘变得容易。
2. 2. The engineer designed the bridge with a curved characteristic to reduce the weight and improve stability.
   工程师设计了一座具有曲线特征的桥梁，以减轻重量并提高稳定性。
3. 3. The curved characteristic of the road made it difficult for pedestrians to cross safely.
   道路的曲线特征使行人过马路时难以安全通过。