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