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TOEFL BNC: 8664 COCA: 10637

refinement noun CHANGE

[ U ] the process of making a substance pure提炼;提纯;精炼

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 ] a small change that improves something(精细的)改进,完善

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。

refinement noun POLITENESS

[ U ] a quality of politeness and education文雅;高雅;有教养

She's the personification of culture and refinement.她是文化与教养的化身。

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