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Видео3,00 $Young woman speaks to audience of listeners, carry out lecture.

Видео3,00 $Girl doctor speaker with paper data report during lecture

Видео3,00 $Students take pictures of screen or scan QR code

Видео3,00 $Girl doctor speaker with remote control during lecture

Видео3,00 $Female lecturer communicates with students, controls projector using remote control.

Видео3,00 $Senior male speaker shares happy news, makes participants laugh

Видео3,00 $Woman stands in front of business colleagues, tells report

Видео3,00 $Girl doctor speaker with paper data report during lecture

Видео3,00 $During meeting at class, teen pupil listen to lecture, female teacher in background.

Видео3,00 $Senior woman couch speaks to audience of listeners, carry out lecture.