Schlüsselwort: 即時(shí)(shí)(shí)(shí)通訊___________，企業(yè)(yè)(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)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信