persevere in something 坚持某事
persevere with something 坚持某事
persevere through difficulties 克服困难坚持下去
A: Why is he still working so hard?
A：他为什么还在这么努力工作？
B: Because he perseveres even when things get difficult.
B：因为即使在困难的时候，他也坚持不懈。
1) 坚持不懈
2) 锲而不舍
3) 毅力坚持
1. 坚持不懈；锲而不舍
verb
1. To continue to do something or to make an effort in spite of difficulties or opposition.
Synonym: persist, endure