Sunrise against the background of nature, water and treesSunrise against the background of nature, water and trees
A darkened pond against the background of mountainsA darkened pond against the background of mountains
A tree against the background of a purple misty dawnA tree against the background of a purple misty dawn
Непрозрачный воздух, насыщенный водяными парами, а также загрязнённый пылью, дымом, копотью и т. п..