Mot-clefs : 即時(shí)通訊___________________，企業(yè)(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)(fā)