main bridge的用法和樣例：
例句
- Binzhou Yellow River Bridge is a three-tower cable-stayed bridge with prestressed concrete girders.
摘要濱州黃河大橋主橋是三塔預應力混凝土斜拉橋，主梁為預應力混凝土箱梁。 - After the bridge opened to traffic, the motorcade drove slowly past the main bridge and arrived on the other side of the Yangzi River.
大橋通車(chē)后，車(chē)隊緩緩通過(guò)了主橋，進(jìn)入長(cháng)江的對岸。
