Ключевые слова: architecture, building, business, caucasian, cheerful, chemical, chemistry, clouds, construction, crude, education, energy, engineer, engineering, environment, equipment, factory, fuel, gas, industrial, industry, job, male, man, manufacturing, metal, modern, occupation, oil, people, petrochemical, pipe, pipeline, plant, power, production, professional, refinery, sky, smiling, steel, tank, technology, tower, work, work wear, worker, workman, workplace,