The bright blue sky is reflected in the surface of the lake in the middle of the forestThe bright blue sky is reflected in the surface of the lake in the middle of the forest
The surface of the lake against the background of a very beautiful sunsetThe surface of the lake against the background of a very beautiful sunset
Natural landscape with the reflection of a tree on the water surfaceNatural landscape with the reflection of a tree on the water surface
The surface of the water with a rabbit and the skyThe surface of the water with a rabbit and the sky
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..