英语词汇be on (或 upon) one's mettle怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	be on (或 upon) one's mettle
释义	be on (或 upon) one's mettle 奋发，准备尽最大的努力 We'll have to be on our mettle to win the game. 要在这场比赛中获胜，我们得准备尽最大的努力。
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英汉双解词典包含548777条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。