R 开头单词
refined oil [油脂] 精制油；[食品] 精炼油
refined matte [冶金工程技术]精炼铜
refined grain magnesium salt [经济学]精制镁盐[机械工程]精制镁盐
refined ferromanganese [经济学]精炼锰铁
refined cotton linter [经济学]精制棉短绒
refined copper 精铜；[冶] 精炼铜
refined clay [经济学]精炼粘土
refined chinese lacquer [经济学]精制大漆
refined and courteous urbane 彬彬有礼
refined alkali lignin [化学]精制碱木质素
refined adj.精炼的；优雅的；精细的动词refine的过去式和过去分词.
refine sugar 制糖
refine on 精于；改进
refine natural emulsion REFINE天然乳液
refine vt. 精炼，提纯；改善；使…文雅