Palavra chave: 即時(shí)通訊_____，企業(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)________________，金笛短信