Keywords
caucasian appearance, chinese ethnicity, demonstration, education, eye glasses, four people, head, indian ethnicity, interior, laboratory, learning, lesson, looking up, mixed race person, multiracial group, over 18, pupil, safety glasses, scientific education, smiling, student, study, teenage boys, teenage girls, teenager, top section, white coat, young adult, 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, u27432381