refine

释义

vt. 精炼, 净化, 使优雅, 使精炼\nvi. 被精炼, 被净化 refine on 精于；改进

例句

Oil is refined to remove naturally occurring impurities.

油经过提炼去除天然生成的杂质。

Car makers are constantly refining their designs.

汽车制造商在不断完善他们的设计。