Schlüsselwort: 即時(shí)(shí)(shí)通訊____________________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________，龍笛即時(shí)(shí)(shí)通___________，視頻會(huì)議________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________________，金笛短信