lcd video projector business conference lecture office with copy space ceiling indoors |
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| navigate by keyword : audience audiovisual background blue business classroom computer conference corporate demonstration digital discussion display education entertainment equipment event focus lamp learning lecture lens light listening meeting modern movie multimedia object office people presentation presenting projection projector room screen seminar showing slide table team technology training video visual white work working |
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| LCD video projector at business conference or lecture in office with copy space . LCD video projector at business conference or lecture in office with copy space. projector on ceiling indoors |
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