camber of bridge span

例句：

1. 1. The bridge has abeautiful camber that makes it looklike a dragonfly.
   这座桥有一个美丽的拱形，看起来像一只蜻蜓。
2. 2. The car's camber is designed toimprove handling and stability.
   汽车的拱形设计旨在提高操控性和稳定性。
3. 3. Thecamber of the road is steep,making it difficult for pedestrians to cross.
   道路的拱形陡峭，行人难以过马路。