Royalty-Free Lectures Photos, dominant color: green
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group of people having a meeting -
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two yellow and blue parrots on tree branch -
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man wearing black suit jacket -
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people on a meeting -
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three person sitting on chairs beside desks -
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blue theater chairs -
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man wearing black formal suit while holding gray laptop computer -
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people gathering inside building -
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white steel chair lot -
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man in white top holding multimeter -
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black hair woman holding a black dynamic microphone -
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black text on white background -
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person in white shirt presenting on crowd