Ключевые слова: architecture, blue, bridge, city, clouds, construction, dynamic, ecological, eiffel, europe, express, famous, fast, high, industrial, infrastructure, landmark, metal, metro, metropolis, modern, morning, outdoor, overpass, porto, portugal, portuguese, rail, railroad, railway, rapid, shuttle, sky, station, steel, technology, terminal, track, traffic, train, tram, tramway, transport, transportation, travel, vehicle, viaduct, way,