Ключевые слова: arrival, black, cargo, circle, classic, coupling, curve, diagonal, energy, engine, focus, fuel, goods, heavy, industry, iron, journey, land, line, machine, metal, mode, part, power, rail, railroad, railway, red, rod, shapes, stack, steel, stone, strength, surface, technology, tilt, track, traditional, train, transport, transportation, travel, vehicle, wheel,