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(huì)議__________________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________，金笛短信