Definition
to persist with effort in doing something challenging
坚持不懈
Although learning a new skill is difficult, she decided to stick at it.
虽然学习新技能很困难，但她决定坚持下去。
He stuck at the challenging job and eventually received a promotion.
他坚持做这份具有挑战性的工作，最终获得了晋升。
If you can stick at this sport, you will definitely see results.
如果你能坚持这项运动，你一定会看到成果。