Schlüsselwort: 即時(shí)通訊___________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________________，龍笛即時(shí)通____________，視頻會議_______________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________________________，金笛短信