coffee cup drinks and mobile phone prohibition sign the auditorium door |
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| navigate by keyword : allowed attention background ban black call caution cell coffee communication concept cup design door drink forbidden graphic icon information label lecture library mobile modern not phone pictogram prohibited prohibition red restrict restricted restriction rule safety sign signboard silence silhouette simple smartphone stop symbol technology telephone university warn warning zone |
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| No coffee cup or drinks and mobile phone prohibition sign on the auditorium door are setting the rules in the interior |
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