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)(huì)議_____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信