Mot-clefs : 即時(shí)(shí)通訊______________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____，龍笛即時(shí)(shí)通__________________，視頻會(huì)議____________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信