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