Ключевые слова: adult, aim, background, beautiful, business, concept, endless, female, goal, gravel, industry, journey, landscape, leisure activity, life, light, line, man, metal, motivation, nature, outdoor, person, perspective, purpose, rail, railroad, railway, railway train, road, run, running, sky, speed, station, steel, success, target, technology, tourism, track, traffic, train, transport, transportation, travel, walk, way, young,