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)