•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。

•These refinements have increased the machine's accuracy by 25%.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。

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