| 单词 | brush up sth |
| 释义 | brush up sth brush up (on) sth — phrasal verb with brush /brʌʃ/ verb ► C1 to improve your knowledge of something already learned but partly forgotten: » I thought I'd brush up (on) my French before going to Paris.Thesaurus+: ↑Making things better , ↑Becoming better |
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