Subway system
01
地铁系统, 地铁网络
an underground network of trains and stations designed for public transportation within a city
例子
The subway system in New York City operates 24 hours a day, connecting all five boroughs.
纽约市的地铁系统全天24小时运行,连接所有五个行政区。
Tourists found the subway system in Tokyo efficient and easy to navigate despite the language barrier.
尽管存在语言障碍,游客们发现东京的地铁系统高效且易于导航。



























