A refined substance has been made pure by removing other substances from it:
C2 improved because of many small changes that have been made:
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Natural and artificial
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C2 very polite and showing knowledge of social rules
Polite and respectful
made pure by removing unwanted material:
Someone who is refined is polite, graceful, and aware of quality and style:
a refined substance has been made pure by removing other substances from it:
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。