Schlüsselwort: 即時(shí)(shí)(shí)(shí)通訊____________，企業(yè)(yè)(yè)(yè)(yè)溝通________，龍笛即時(shí)(shí)(shí)(shí)通__，視頻會(huì)(huì)(huì)議_____________，集成開(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)___________，金笛短信