The surface of the water with a rabbit and the skyThe surface of the water with a rabbit and the sky
The red bridge over the water surface goes into the fogThe red bridge over the water surface goes into the fog
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
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..