Schlüsselwort: 即時(shí)(shí)通訊___________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_______________________，龍笛即時(shí)(shí)通___________________，視頻會議_____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________________，金笛短信