キーワード: 即時(shí)(shí)(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通_____，龍笛即時(shí)(shí)(shí)通____________，視頻會(huì)議_________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信