他锲而不舍、百折不挠的劲头儿用英语怎么说？

他锲而不舍、百折不挠的劲头儿

...his ability to persevere despite obstacles and setbacks.

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

ability

n. 能力，资格，能耐，才能；

例句
The public never had faith in his ability to handle the job...
公众从来不相信他有能力胜任这一职位。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

persevere

vi. 坚忍，熬住，坚持，百折不回，不屈不挠，支撑；

例句
It took a generous helping of entrepreneurial confidence to persevere during this incident.
在这一事件中坚持下来是有了充足的创业信心的。

despite

prep. 尽管，虽然，不由自主；

例句
The gentleman, despite his advanced years, helped Kathryn back to her seat.
这位绅士，尽管年事已高，仍然帮着凯瑟琳回到座位上。

obstacles

n. 障碍（物）( obstacle的名词复数 )，障碍物，绊脚石，障碍栅栏；

例句
The game had a single inviolable rule: obstacles were to be overcome, not circumvented.
该比赛有一个规则不可违背：必须跳过而不能绕过障碍物。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

setbacks

周折；

例句
Various setbacks and problems delayed production...
各种各样的挫折和问题耽搁了生产进度。