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