地铁的复数形式

　　Application of shallow underground excavation method and shield driving method for urban subways

　　浅埋暗挖法和盾构法在城市地铁中的应用

　　Yes, but there will be new subways soon and new bus systems.

　　B是啊，但是马上就会建成新的地铁和新的公共汽车体制。

　　Taking public transportation such as buses and subways and driving less

　　尽量多乘坐公交车和地铁，少开车