キーワード: 即時(shí)通訊___________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________________，龍笛即時(shí)通_____________________，視頻會議________________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________，金笛短信