mettle
noun [ U ] uk/ˈmet.əl/ us/ˈmet̬.əl/
精神；勇气；才能
ability and determination when competing or doing something difficult
The team showed/proved its mettle in the final round. 运动队在最后一轮中展现了他们的拼搏精神。
The real test of her political mettle came in the May elections. 五月份的选举是对她政治才能的真正考验。
Idiom
on your mettleidiom UK全力以赴，准备尽最大努力
ready to do something as well as you can in a difficult situation
Both players were on their mettle in the final round. 两名选手在最后一轮中都拼尽了全力。
Cooking for such important people really puts you on your mettle. 为如此重要的人物烹饪真是要拿出看家手艺才行。