refinement
noun uk/rɪˈfaɪn.mənt/ us/rɪˈfaɪn.mənt/
(CHANGE)
[ U ]提炼；提纯；精炼
the process of making a substance pure
The refinement of raw opium yields other drugs, such as morphine. 生鸦片经过提炼产生其他药物，如吗啡。
[ C or U ]（精细的）改进，完善
a small change that improves something
These refinements have increased the machine's accuracy by 25 percent. 经过这些改进，机器的准确率提高了25%。
Clearly, the hypothesis does need some refinement, in the light of these surprising results. 很显然，从这些令人惊讶的结果来看，该假设确实需要进一步完善。
(POLITENESS)
[ U ]文雅;高雅;有教养
a quality of politeness and education
She's the personification of culture and refinement. 她是文化与教养的化身。