Ключевые слова: adult, africanamerican, architecture, backdrop, background, black, blur, boy, building, casual, chair, chairs, class, classes, classroom, college, communication, conference, design, desk, education, effect, indoors, interior, light, male, man, meeting, modern, paying attention, people, person, portrait, presentation, professional, room, school, seminar, shirt, sitting, student, table, teacher, teen, teenager, university, wearing, white, working, young,