Schlüsselwort: 即時(shí)通訊____________________，企業(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)_____________________，金笛短信