Ключевые слова: academic, bachelor, back, blackboard, board, chalkboard, chemical, chemist, chemistry, class, classmates, classroom, college, degree, demonstrating, diploma, discussing, education, equation, formula, formulas, graduate, graduating, learning, lecture, lecturer, lesson, man, master, mentor, mentoring, mortar, mortarboard, pointing, presenting, professor, school, science, scientific, scientist, showing, student, study, studying, teacher, teaching, to, tutoring, university, woman,