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___________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)_____________________，金笛短信