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