Mot-clefs : 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)