testament

The historical castle's survival for centuries is a testament to the skill of the original builders.

(Chinese) 这座古城堡历经数世纪而屹立不倒，有力地证明了最初建造者的精湛技艺。

Her success in the marathon is a testament to her months of rigorous training.

(Chinese) 她在马拉松比赛中的成功是对她数月严格训练的最好见证。