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
语法信息
有生性状态
无生命
形态构成
复合词
可数
复数形式
subway systems
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。
