informal (+ on) to try to master necessary information in a short time, esp for a special purpose
I'd better bone up on those theorems before the exam
| 单词 | bone up |
| 释义 | bone upverb intransinformal (+ on) to try to master necessary information in a short time, esp for a special purpose I'd better bone up on those theorems before the exam |
| 随便看 |
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