キーワード: 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