Schlüsselwort: 即時(shí)(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_______________________，龍笛即時(shí)(shí)通_____________________，視頻會(huì)(huì)議_________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________________，金笛短信