the political orientation of those who favor progress toward better conditions in government and society
progressivism详细解释
pro.gres.siv.ism n.（名词）The principles and practices of political progressives.进步党人的政见：进步党人的原则和作法Progressive education.循序渐进的教育理论 【引伸】 progres.sivist n.（名词）progres.sivis.tic adj.（形容词）
