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