Ключевые слова: blue, building, camera, cctv, city, control, day, district, downtown, electronic, equipment, exterior, guard, industry, landmark, lens, looking, modern, monitor, nobody, observe, office, outdoors, pole, privacy, private, protect, protection, record, safety, security, shanghai, sky, skyscraper, street, surveillance, system, technology, toned, urban, view, watching,