キーワード: 即時(shí)(shí)通訊_________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通_______________，龍笛即時(shí)(shí)通_______，視頻會議___，集成開發(fā)(fā)(fā)(fā)(fā)(fā)______，金笛短信