subway system
参考词典中subway system的常规释义：
基本释义
- 地铁网
英英解释
1个名词解释
- an electric railway operating below the surface of the ground (usually in a city)
[同] metro, subway, subway system, tube, underground
[例]- in Paris the subway system is called the metro' and in London it is called the tube' or the underground'
点击查看……- an electric railway operating below the surface of the ground (usually in a city)
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