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)議_________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________________，金笛短信