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| Spanish | English |
| descarga en tren | incremental drop |
| tren de aparatos de muestreo | sampling train |
| tren rápido de tránsito | rapid transit train |
| tren subterráneo | underground train |
| tren subterráneo | underground train A train for transportation of people, mostly beneath the surface of the ground, in order to lessen the traffic |
| trenes de alta velocidad | high-speed train |
| trenes de alta velocidad | high-speed train Trains travelling at maximum speeds of 300kmh on special high-speed rail lines |