Ключевые слова: air, air conditioner, air pressure, big, brick, building, cable, cloud, compressor, concrete, construction, electric, equipment, exterior, fan, filter, heavy, hole, hot, industry, manufacturing, metal, motor, outdoors, oxygen, pipe, pollution, power, public, pumping, purity, recycle, roof, shadow, sky, smoke, steaming, steel, structure, sunny, system, temperature, tower, tube, turbine, turbo, vacuum, ventilation chimney, wall, wing,