Ключевые слова: abstract, air, atmosphere, backdrop, background, beautiful, bright, clean, clear, cloud, cloudscape, cloudy, color, concept, cumulus, day, design, ecology, element, empty, environment, fluffy, freedom, heaven, insert, landscape, light, meteorology, natural, nature, open, outdoor, ozone, pattern, place, season, single, sky, space, spring, stratosphere, summer, sunny, symbol, tranquil, view, weather, white, zinc,