The red bridge over the water surface goes into the fogThe red bridge over the water surface goes into the fog
A few purple leaves. fallen on the surface of blue waterA few purple leaves. fallen on the surface of blue water
Reflection of snowy mountains in the water surfaceReflection of snowy mountains in the water surface
Reflection of the forest and mountains in the surface of the lakeReflection of the forest and mountains in the surface of the lake
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..