Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students
A twig on the edges of the painting is an abstractionA twig on the edges of the painting is an abstraction
Nature resembling a village on the edge of the countryNature resembling a village on the edge of the country
The house on the edge of the lake has always attracted touristsThe house on the edge of the lake has always attracted tourists