Mot-clefs : 即時(shí)通訊__________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_______，龍笛即時(shí)通________________，視頻會(huì)議____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________，金笛短信