refining

🇬🇧/rɪˈfaɪn/ 🇺🇸/rɪˈfaɪnɪŋ/ 39四级六级考研雅思托福 GREgmat

When a substance is refined, it is made pure by having all other substances removed from it. ^提炼

verb [vt. 及物动词]精炼，提纯；改进，改善（refine 的现在分词）

Oil is refined to remove naturally occurring impurities.
油经过提炼去除天然生成的杂质。

refining

n.精炼

单词造句:

相关词汇

原型refine/rɪˈfaɪn/vt. 精炼，提纯；使 … 文雅；改善