Snow-covered forest on the background of a hill in the fogSnow-covered forest on the background of a hill in the fog
Electric train in fog on the background of a lawn in fogELECTRIC TRAIN IN FOG ON THE BACKGROUND OF A LAWN IN FOG
A tree with yellowed leaves in a haze of fog in a forest in the mountainsA tree with yellowed leaves in a haze of fog in a forest in the mountains
Непрозрачный воздух, насыщенный водяными парами, а также загрязнённый пылью, дымом, копотью и т. п..