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