Ключевые слова: achievement, advise, airport, alert, attention, board, business, button, careful, caution, down, escalator, floor, go, icon, info, information, internet, lift, lines, mall, motion, move, people, public, recommendation, ride, safety, search, shopping, sign, single, speed, stair, staircase, stairway, step, stick, success, symbol, technological, to, transportation, up, vintage, walk, walkway, warn, web,