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