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