Ключевые слова: academic, blackboard, board, caucasian, chalk, chemistry, class, classroom, coat, college, color, concentrate, degree, dof, education, elderly, faculty, formula, graduate, hall, high, image, intelligent, learn, lecture, lecturing, male, man, one, person, physics, profession, professor, pupils, school, science, scientist, secondary, senior, shallow, smile, students, study, teacher, toned, university, white, wisdom, wise, write,