Ключевые слова: adult, arc, aspirations, colleague, concentration, construction, cooperation, coworker, development, doing, duty, effort, engineering, especially, facilities, factory, fire, gear, heat, heavy, horizontal, industrial, industries, industry, iron, job, light, man, manufacture, manufacturing, mask, men, metal, occupation, people, plant, protection, repairing, safety, skill, spark, steel, tool, wearing, weld, welder, welding, work, working,