Autumn tree with bright leaves on the background of a winter landscapeAutumn tree with bright leaves on the background of a winter landscape
A field of pink cosmos on the background of mountains and cloudsA field of pink cosmos on the background of mountains and clouds
A field with pink flowers on the background of snow-capped mountainsA field with pink flowers on the background of snow-capped mountains
The rays of the sun fall on the leaves of the treesThe rays of the sun fall on the leaves of the trees
Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students