major bridge

例句：

1. 1. The construction of the new major bridge has been a long-awaited project for many years.
   新建的主要桥梁是多年来许多人期待已久的项目。
2. 2. The major bridge is the lifeline of the city's transportation system.
   主要桥梁是城市交通系统的命脉。
3. 3. The major bridge over the river was designed to withstand heavy traffic.
   河上的主要桥梁设计用来承受重交通。