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)