【範例】on one's mettle
ready to do something as well as you can in a difficult situation
全力以赴，準備盡最大努力
Both players were on their mettle in the final round.
兩名選手在最後一局都使出渾身解數。(劍橋)
【檢視】
身為長年的專業翻譯，我總是不忘提醒讀者在從事英文翻譯時選擇正確定義的重要性，如果針對這句成語，你能查到"to show how tough one is"的定義，相信你必定能夠更清楚的瞭解這句話的意思：
If you are going to survive this crisis, you must be on your mettle.
如果你想度過此次危機，你必須展現毅力。
身為運動員，我們知道，要贏得最後的勝利，必須展現的就是毅力：
The loss of the first two sets put him on his mettle to win the match.
輸掉前兩盤讓他展現毅力贏得比賽。
中文的「使出渾身解數」，英文是try the whole bag of tricks，翻譯必須能夠雙向對應才有說服力：
我們必須一開始就展現毅力。
We’ll have to be on our mettle from the start.
