Ключевые слова: architect, asia, back, background, builder, building, business, businessman, construction, constructor, contractor, ecology, electric, electrical, electricity, energy, engineer, engineering, equipment, gas, hand, hardhat, hat, helmet, holding, industrial, industry, inspector, job, male, manager, men, necktie, occupation, people, person, pipe, power, profession, professional, protection, security, station, suit, technician, warming, work, worker,