Ключевые слова: background, barbwire, blue, cage, city, fence, finland, flammable, gas, gas pipe, gauge, gray, industrial, industry, iron, machine, metal, meter, natural, natural gas, natural gas station, oil, outside, pipe, pipeline, pipes, protection, protective, pump, red, regulator, russia, rusted, rusty, siberia, steel, summer, supply, technique, technological, technology, tube, tubing, urban, utility, vent, wall, water, wilderness, yellow,