Fish on the background of the orange surface of the waterFish on the background of the orange surface of the water
An astronaut landed on the moon for a scientific study of the surfaceAn astronaut landed on the moon for a scientific study of the surface
Still life from a cup of coffee on a dark table surfaceStill life from a cup of coffee on a dark table surface
Autumn trees on the background of the river surfaceAutumn trees on the background of the river surface
The surface of the lake on the background of sunsetThe surface of the lake on the background of sunset
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..