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