railway and highway combined bridge

例句：

1. 1.The railway and highway combined bridge is a vital transportation link between the city and the countryside.
   这条铁路和高速公路结合的桥梁是城市与乡村之间重要的交通纽带。
2. 2. The construction of this railway and highway combined bridge has greatly improved the efficiency of transportation in the area.
   这座铁路和高速公路结合桥的建设大大提高了该地区的运输效率。
3. 3. The safety of the railway and highway combined bridge is closely monitored by the authorities to ensure the smooth operation of traffic.
   该铁路和高速公路结合桥的安全状况由当局密切监控，以确保交通顺畅运行。