キーワード: 即時(shí)通訊_____，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________，龍笛即時(shí)通________________，移動(dòng)辦公____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)