1ADJ-GRADED [usually ADJ n]精炼的;去杂质的;提纯的 A refined substance has been made pure by having other substances removed from it. 精炼的;去杂质的;提纯的
...refined sugar.
精制白糖
2ADJ-GRADED (人)有礼貌的,有教养的,彬彬有礼的,有品位的 If you say that someone is refined, you mean that they are very polite and have good manners and good taste. (人)有礼貌的,有教养的,彬彬有礼的,有品位的
3ADJ-GRADED 经过完善的;经过提升的 If you describe a machine or a process as refined, you mean that it has been carefully developed and is therefore very efficient or elegant. 经过完善的;经过提升的
...a more refined engine.
更加完善的引擎
This technique is becoming more refined and more acceptable all the time.