Ключевые слова: black, board, business, conference, crowd, event, government, graphic, group, icon, illustration, information, isolated, lecture, line, man, meeting, microphone, office, orator, people, person, pictogram, podium, presentation, presenter, presenting, president, public, room, sign, silhouette, speak, speaker, speaking, speech, stage, symbol, talk, teacher, teaching, training, web,