キーワード: 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)議____________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________，金笛短信