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Motivational speaker with headset performing on stage, back view
African American adult education teacher giving a lecture to group of students in the classroom.
Medical conference, education. Students study research in cardiology science. Doctor giving speech on medicine seminar for audience. Scientist presenting human heart infographics at workshop training
Female speaker giving presentation in lecture hall at university workshop. Rear view of unrecognized participants listening to lecture and making notes. Scientific conference event.
Business and entrepreneurship symposium. Speaker giving a talk at business meeting. Audience in conference hall. Rear view of unrecognized participant in audience.

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