Keywords
16-19, 16-19 years, 18-20, 18-20 years, 20-25, 20-25 years, 20-30, 20-30 years, 20s, adult, adults, alert, alertness, artificial light, auditorium, auditoriums, bilderlounge, bored, boredom, boy, boys, casual, casual wear, caucasian, class, classes, college, colleges, color, colors, colour, colours, concentrate, concentrating, concentration, copy space, curiosity, curious, dark hair, dark haired, daylight, daytime, desk, desks, disinterested, doze, dozing, dozing off, early 20s, early twenties, education, european style, exhausted, exhaustion, facing camera, facing the camera, female, girl, girls, group, groups, high school, high schools, high-school, high-schools, horizontal, indoors, inside, interior, learn, learning, lecture auditorium, lecture auditoriums, lecture hall, lecture halls, lecture theater, lecture theaters, lecture theatre, lecture theatres, long hair, long haired, looking at camera, male, man, men, people, person, photography, portrait, portraits, rf, royalty free, royalty-free, school, schools, short hair, short haired, sleep, sleeping, student, students, studies, study, teen, teenage, teenage boy, teenage boys, teenage girl, teenage girls, teenager, teenagers, teens, tired, tiredness, twenties, twenty something, twentysomething, uninterested, universities, university, woman, women, young, young adult, young adults, young female, young females, young male, young males, young man, young men, young people, young woman, young women, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, 016493bl