Definition
地铁 (dìtiě) is the subway or metro — the underground train system used for urban transportation. 地下 (dìxià) means 'underground' as a place (e.g., underground parking), not the transit system itself.
noun
subwaymetro
Examples
- 地铁。Zuò dì tiě qù xuéxiào hěn fāngbiàn.Taking the subway to school is very convenient.
- 地铁。dì tiě bǐ gōngjiāochē kuài duō le.The subway is much faster than the bus.
- 。dì tiě zhàn lǐ yǒu hěn duō rén.There are many people in the subway station.
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