Ключевые слова: air, airflow, blades, blower, breeze, circle, climate, cold, conditioned, conditioning, cool, cooler, cooling, danger, decay, dirty, engine, environment, extractor, factory, fan, freshener, heat, hot, industrial, industry, machine, mechanical, metal, motor, old, power, protected, protection, rotate, rotating, round, rust, square, steel, turbine, ventilating, ventilation, ventilator, wind,