saddle shaped curvature

例句：

1. 1. The car's steering wheel is designed with asaddle shaped curve for better control.
   汽车的方向盘设计有鞍形曲线，以便于更好的控制。
2. 2. The mountain range has a saddleshaped curvature that makes it difficultto climb.
   山脉有鞍形弯曲，使得攀登变得困难。
3. 3. The river flows througha saddle shaped curvature, providinga scenic view for tourists.
   河流穿过一个鞍形弯曲，为游客提供了美丽的风景。