Schlüsselwort: 即時(shí)通訊___________，企業(yè)(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)(fā)_________________，金笛短信