perseverance

It took ten years of hard work and perseverance for her to finally earn her medical degree.

(Chinese) 经过十年的努力和毅力，她终于获得了医学学位。

Without the perseverance of the early explorers, many parts of the world would have remained unmapped.

(Chinese) 如果没有早期探险者的坚持不懈，世界的许多地方至今仍未绘制在地图上。