Schlüsselwort: 即時(shí)(shí)通訊_______________，企業(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)___________，金笛短信