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