キーワード: 即時(shí)(shí)通訊______，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________________，龍笛即時(shí)(shí)通_________________，視頻會(huì)議_____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信