Mot-clefs : 即時(shí)通訊___________________，企業(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)_________________________，金笛短信