Bridges illuminated and the water surface in the nightBridges illuminated and the water surface in the night
Reflection of the sunset on the surface of the waterReflection of the sunset on the surface of the water
Reflection of snowy mountains in the water surfaceReflection of snowy mountains in the water surface
Lightning cutting the surface of the sky reaches directly to the groundLightning cutting the surface of the sky reaches directly to the ground
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..