It put him on his mettle.

这让他鼓起勇气。

" It puts him on his mettle" .

这可要让他全力以赴了。

This unlucky encounter with Giraud had roused Poirot and put him on his mettle.

与吉罗的不幸相遇使波洛振作起来， 使他鼓起勇气。

When we left the car and the dog began to find birds, I blundered along with my shooting as usual but Fred was on his mettle.

当我们离开汽车时， 那只狗开始寻找鸟类， 我像往常一样在射击时犯了错误， 但弗雷德勇往直前。