不屈不挠.用英语怎么说？

不屈不挠.

Fortitude indefatigability perseverance persevere tenacity.

fortitude

n. 坚韧，刚毅，刚毅精神，松柏节操；

例句
This is the kind of fortitude we must have.
就是要有这股狠劲.

indefatigability

n. 不疲劳，不屈不挠；

例句
Fortitude indefatigability perseverance persevere tenacity.
不屈不挠.

perseverance

n. 毅力 ，韧性，不屈不挠的精神；

例句
My perseverance was getting me somewhere.
我锲而不舍，总算有了一些进展。

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。

tenacity

n. [物]韧性，韧度，固执，坚持，不屈不挠，黏性；

例句
Talent, hard work and sheer tenacity are all crucial to career success.
事业要成功，才能、勤奋和顽强的意志都至关重要。