キーワード: 即時(shí)(shí)通訊_______，企業(yè)(yè)(yè)(yè)(yè)溝通________________，龍笛即時(shí)(shí)通__________，視頻會(huì)(huì)議_______________，集成開發(fā)(fā)(fā)(fā)(fā)________，金笛短信