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    Male community college instructor leading lesson at projection screen in classroom — Stock Photo
    Male community college instructor leading lesson at projection screen in classroom
    Female community college instructor leading lesson at projection screen in classroom — Stock Photo
    Female community college instructor leading lesson at projection screen in classroom
    Audience members with smart phones videoing speaker on stage at conference — Stock Photo
    Audience members with smart phones videoing speaker on stage at conference
    Happy friends cheering, watching soccer match on projection screen in backyard — Stock Photo
    Happy friends cheering, watching soccer match on projection screen in backyard
    Audience clapping for female speaker — Stock Photo
    Audience clapping for female speaker
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Projection screens and seats in empty conference auditorium — Stock Photo
    Projection screens and seats in empty conference auditorium
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Community college students watching instructor leading lesson at projection screen in classroom — Stock Photo
    Community college students watching instructor leading lesson at projection screen in classroom
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting