Mot-clefs : 即時通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________________，龍笛即時通____________________，視頻會議___________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________，金笛短信