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