キーワード: 即時(shí)(shí)(shí)通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____________________，龍笛即時(shí)(shí)(shí)通____________，移動(dòng)(dòng)辦公____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)