Ключевые слова: airport, architecture, aspiration, blue, building, business, career, difficulty, diminishing, elevator, empty, escalator, footstep, glass, growth, hall, instant, interior, lift, line, mall, metal, metro, modern, moment, movement, obstacle, office, perspective, public, raise, reflect, stair, staircase, stairway, station, steel, step, subway, technology, traffic, transport, underground, up, upward, urban, vanishing, velocity, waiting, way,