キーワード: 即時(shí)(shí)(shí)通訊______________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________________，龍笛即時(shí)(shí)(shí)通______________________，視頻會(huì)(huì)(huì)議_____________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________________________，金笛短信