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TOEFL IELTS BNC: 7830 COCA: 6600

refine

Word family
Related topics: Industry
re·fine /rɪˈfaɪn/ ●○○ AWL verb [transitiveT]  
1 IMPROVEto improve a method, plan, system etc by gradually making slight changes to it 〔逐步〕改进;完善
 Car makers are constantly refining their designs.
汽车制造商在不断完善他们的设计。
2 TIto make a substance purer using an industrial process 净化;提炼 refinery
 oil refining
石油的提炼
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re·fine verb
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