Ключевые слова: bamboo, black, brown, burn, candid, circle, close, collection, cross, dirty, dry, energy, fire, firewood, forest, fuel, gray, grey, growth, hardwood, layer, logging, logs, material, modern, nature, old, pattern, pine, rings, rough, section, shape, stack, stacked, structure, stump, sustainable, texture, timber, tree, unique, wood, wooden,