on her mettle
论她的勇气
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Emma' s on her mettle for the tennis championship.
爱玛准备尽最大努力，夺取网球冠军。
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After her parents' divorce, she moved to Paris with her mother which is where, as a teenager, she tested her mettle as a performer by busking on the streets.
CNN: Madeleine Peyroux looks deep inside
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