Schlüsselwort: 即時(shí)通訊_________________，企業(yè)(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)(fā)_____________________________，金笛短信