Ключевые слова: airport, architecture, building, business, center, city, customer, design, direction, electric, elevator, escalator, escalators, indoor, interior, lift, mall, metal, modern, motion, move, movement, moving, moving walkway, perspective, platform, public, retail, shopping, shopping center, speed, stair, staircase, stairs, stairway, station, steel, step, subway, technology, transport, transportation, travelator shopping, underground, up, upstairs, urban, walk, walkway, way,