详细解释:a. 后退的, 退化的, 回归的
【医】 退化的, 退行的, 消退的, 回归的
【经】 递减的(税率)
词型变化：
副词:regressively名词:regres-siveness英语解释：
形容词 regressive:
(of taxes) adjusted so that the rate decreases as the amount of income increasesopposing progress; returning to a former less advanced state例句：
A type of schizophrenia, usually starting at puberty, characterized by foolish mannerisms, senseless laughter, delusions, hallucinations, and regressive behavior.青春期痴呆一种精神分裂症，通常始发于青春期，其特征为举止痴呆、傻笑、妄想、幻觉以及退化的举止