Ключевые слова: architecture, background, blue, build, builder, building, closeup, construction, ecology, electric, electricity, energy, energy conservation, equipment, gas, hand, heat, heating, home, house, indoor, industrial, industry, installation, installer, insulated, insulation, interior, isolated, isolation, man, material, men at work, metal, pipe, power, protection, repair, roof, saving, structure, technology, temperature, thermal, thermal insulation, wall, white, window, work, working,