Mot-clefs : 即時(shí)(shí)通訊_____，企業(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)___，金笛短信