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历史:
CET-4 CET-6 考研 TOEFL IELTS BNC: 7830 COCA: 6600

refine

refine /rɪˈfaɪn/ verb
refines; refined; refining
refine
/rɪˈfaɪn/
verb
refines; refined; refining
Learner's definition of REFINE
[+ object]
: to remove the unwanted substances in (something)去除杂质;精炼
: to improve (something) by making small changes改进;改善

— refiner

noun, plural refiners [count]

— refining

noun [noncount]

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