A beautiful sunset over a calm sea, the rays of the setting sun painted the surface of the water and clouds in golden colorA beautiful sunset over a calm sea, the rays of the setting sun painted the surface of the water and clouds in golden color
Sunset over the silent lake, at the surface of the ghostly waterSunset over the silent lake, at the surface of the ghostly water
A beautiful shell on the smooth surface of the seaA beautiful shell on the smooth surface of the sea
An astronaut on the surface of the moon with a us flagAn astronaut on the surface of the moon with a US flag
Boats on the sea surface in the light of the setting sunBoats on the sea surface in the light of the setting sun
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..