curved jaw

例句：

1. 1. The car's wheels are curved to improve traction on uneven surfaces.
   汽车的车轮是弯曲的，以在不平的表面上提高抓地力。
2. 2. The river flows gently around the bend in the road.
   这条河在路弯处缓缓流淌。
3. 3.The mountain is shaped like a V, with its peak curving towards the horizon.
   这座山的形状像V字，山顶向地平线弯曲。