Palavra chave: 即時(shí)(shí)(shí)通訊_________________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____________，龍笛即時(shí)(shí)(shí)通_____________，視頻會(huì)議___________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信