The bridge on the river seems to float in the waterThe bridge on the river seems to float in the water
A beautiful waterfall flowing down from the mountainsA beautiful waterfall flowing down from the mountains
The rays of the sun at dawn through the branches of treesThe rays of the sun at dawn through the branches of trees
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.