Ключевые слова: 20s, absence, attentive, blur, blurred motion, book, bright, brightly lit, caucasian, chair, class, classroom, closed, college, communication, concentration, day, defocused, desk, education, educator, explaining, female, focused, full frame, gesturing, glass material, green, indoors, information, institute, job, knowledge, learning, lecture, lesson, listening, occupation, office, place of work, school, sitting, standing, student, study, studying, table, teacher, teaching, transparent, university, white, whiteboard, woman, workplace, young adult,