Palavra chave: 即時通訊_______________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________，龍笛即時通______________________，視頻會議____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________，金笛短信