| 单词 | on-ones-mettle |
| 释义 | on one's mettle in British Englishroused to putting forth one's best efforts on one's mettle in American English roused or prepared to do one's best Definition of 'on one's mettle' |
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英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。