The surface of the lake against the background of snow-capped mountainsThe surface of the lake against the background of snow-capped mountains
The chair stands against the background of a field and treesThe chair stands against the background of a field and trees
Burning volcano on the background of the lunar skyBurning volcano on the background of the lunar sky
A tree in the fog against the background of the sunA tree in the fog against the background of the sun
Deciduous tree in the background lighting of the setting sunDeciduous tree in the background lighting of the setting sun
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.