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railway tunnel, road and pedestrian, airtight; with the entry and exit, above the water level. for the connection with the coast, separated by a deep and broad wings of the sea or lakes and wide rivers. freestanding, through chambers
railway tunnel, road and pedestrian, airtight; with the entry and exit, above the water level. for the connection with the coast, separated by a deep and broad wings of the sea or lakes and wide rivers. freestanding, through chambers