Schlüsselwort: 即時(shí)(shí)通訊____，企業(yè)(yè)(yè)(yè)(yè)溝通__________________，龍笛即時(shí)(shí)通__，視頻會(huì)議_______________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)______________，金笛短信