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