Exceptionally valuable or commendable due to its rarity and difficulty; something precious because it is hard to achieve.
在如此艰巨的挑战面前，他依然能够保持积极乐观的心态，这种精神真是难能可贵。
Facing such a daunting challenge, he could still maintain a positive and optimistic attitude; this spirit is truly rare and commendable.
Next Idiom