Ключевые слова: alarm, architecture, building, cctv, city, construction, control, detection, down, emergency, exit, exterior, fire escape, floors, going, guard, heaven, high, industry, iron, ladder, level, mall, metal, modern, new, observe, outdoor, outside, private, property, protect, roof, safety, security, side, sidewall, sky, staircase, stairs, store, surveillance, tall, trade center, up, upwards, urban, video camera, wall, window,