Palavra chave: 即時(shí)(shí)(shí)通訊_______________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通________________，龍笛即時(shí)(shí)(shí)通____________，視頻會(huì)(huì)議____，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)____________________，金笛短信