Ключевые слова: arctic, background, blue, clouds, cold, construction, ecology, energy, equipment, field, flow, freeze, frost, fuel, gas, gasoline, grass, icing, industrial, industry, iron, landscape, line, metal, nature, oil, petroleum, pillar, pipe, pipeline, piping, post, power, pump, resources, russia, siberia, sky, spring, steel, stream, summer, technology, transportation, tube, two, united, up, white, winter,