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