キーワード: 即時(shí)(shí)(shí)通訊_________________，企業(yè)(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)(fā)_____，金笛短信