Tempting lights of the night city on the highway backgroundTempting lights of the night city on the highway background
Suspension bridge across the river on the background of a cloudy skySuspension bridge across the river on the background of a cloudy sky
Beautiful sunset on the background of mountains and waterBeautiful sunset on the background of mountains and water
The sunset is beautiful against the background of the cityThe sunset is beautiful against the background of the city
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.