Reflection of the allegator's head on the water surfaceReflection of the allegator's head on the water surface
Sunset illuminates the surface of the lake, the coast is reflected in the dark waterSunset illuminates the surface of the lake, the coast is reflected in the dark water
Juicy green sedge frames the mirrored surface of the riverJuicy green sedge frames the mirrored surface of the river
A yellow tennis ball lying on the surface of the courtA yellow tennis ball lying on the surface of the court
Reflections of the ferris wheel in the surface of the megapolis riverReflections of the Ferris wheel in the surface of the megapolis river
Night lights of the metropolis on the background of the water surfaceNight lights of the metropolis on the background of the water surface
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..