The heavenly expanse spread out over the water surfaceThe heavenly expanse spread out over the water surface
Water surface against the background of autumn forestWater surface against the background of autumn forest
Reflection in the water surface of trees and mountainsReflection in the water surface of trees and mountains
The reflection of the gentle sky on the calm surface of the waterThe reflection of the gentle sky on the calm surface of the water
Reflections of the ferris wheel in the surface of the megapolis riverReflections of the Ferris wheel in the surface of the megapolis river
A lonely island on the background of the sea surfaceA lonely island on the background of the sea surface
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..