Mot-clefs : 即時(shí)通訊____，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通_______________，龍笛即時(shí)通_______________，移動(dòng)辦公_____，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)