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