| 词汇 | polish up |
| 释义 | polish up transitive verb [polish sth up, polish up sth] ① (shine) 擦亮 ‹glass, spectacles, floor›② figurative (improve, perfect) 改进 ▸ to polish up one's French/knowledge/pronunciation 提高法语水平/完善知识结构/改进发音 ▸ the hotel has polished up its act since last year 这家旅馆自去年以来改善了经营 |
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