キーワード: 即時(shí)(shí)通訊___________，企業(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)通__，視頻會(huì)議__________，集成開發(fā)(fā)(fā)(fā)(fā)________________，金笛短信