改进的
adjective
① (purified) 精炼的 jīngliàn de ‹oil, ore›
▸ highly refined sugar
高精制糖
② (cultured, elegant) 优雅的 yōuyǎ de ‹person, manners, style›
▸ a person of refined tastes
趣味高雅的人
③ (improved) 改进的 gǎijìn de ‹theory, system›