キーワード: 即時(shí)(shí)(shí)通訊_________________，企業(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(kāi)(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________，金笛短信