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