bridging phenomenon

例句：

1. 1. The bridge spans the river to connect two cities.
   这座桥横跨河流，连接两个城市。
2. 2.The engineer designed the bridge to be both functional and aesthetically pleasing.
   工程师设计了这座桥，既实用又美观。
3. 3.The bridge was built to facilitate traffic flow between the two sides of the river.
   这座桥是为了促进河两岸的交通流动而建造的。