Schlüsselwort: 即時(shí)(shí)通訊_______________，企業(yè)(yè)(yè)(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)(fā)(fā)(fā)________，金笛短信