Ключевые слова: abstract, air, architecture, backdrop, background, building, cement, circular, city, concrete, conditioner, construction, cool, copy, curve, design, detail, dirty, empty, frame, grate, grating, gray, grey, grid, grill, grille, grunge, hole, industrial, industry, mesh, metal, modern, old, rough, rust, rusty, space, steel, street, surface, technology, texture, textured, urban, vent, ventilation, wall, white,