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