キーワード: 即時(shí)(shí)通訊__________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通_______，龍笛即時(shí)(shí)通__________，視頻會議____，集成開發(fā)(fā)(fā)(fā)(fā)(fā)______，金笛短信