Ключевые слова: 20s, 30s, academic, acclaim, book, brilliant, buzzword, caucasian, cheerful, class, college, education, excellent, female, good, happy, knowledge, learning, lecture, lecture hall, lecturer, lecturing, male, man, mid adult, praise, single word, sitting, smiling, speaking, standing, student, students, studying, taking notes, talking, teaching, text, textbook, university, woman, writing, young adult,