Ключевые слова: arm, background, bright, business, businessperson, businesswoman, career, closeup, computer, concept, conceptual, costs, course, definition, design, different, education, finger, gesture, good, graphic, hand, illustration, instances, instructors, learners, location, network, online, performance, positive, professional, program, reduce, refers, representation, required, research, sessions, shining, sign, students, success, successful, suit, tag, tagcloud, thumb, time, training, universities, up, word, wordcloud, worker,