Ключевые слова: building, cold, colourful, conduit, construction, copy space, covered, dangerous, daylight, detail, dwelling, eaves, exhaust, exhaust pipe, flue, frozen, home, house, ice, iron, long, metallic, no people, outdoors, photo, pipeline, roof, roof snow, seasonal, smoke, smoking, snow, snowbound, snowdrift, snowy, steel, system, town, tubing, urban, vent, ventilation, ventpipe, wall, weather, white, winter time, wintertime,