Schlüsselwort: 即時(shí)(shí)通訊____________________________，企業(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)_____________，金笛短信