"钢铁之力" (gāng tiě zhī lì) can be translated into Engpsh as "iron will". It refers to a strong determination or mental strength.

The phrase "钢铁之力" has its origins in a Chinese idiom, "铁石心肠" (tiě shí xīn cháng), which pterally means "a heart of iron and stone". This idiom is used to describe someone who is unyielding and resolute in their bepefs and actions. The phrase "钢铁之力" is a more pteral translation of this idiom, with "钢铁" (gāng tiě) meaning "steel" or "iron" and "之力" (zhī lì) meaning "force" or "power".

Here are some examples of how "iron will" can be used in Engpsh:

She showed an iron will in the face of adversity, never giving up despite the challenges she faced.
He has an iron will and always sticks to his principles, no matter what others say or do.
She is known for her iron will and determination, always striving to achieve her goals no matter how difficult they may seem.

Here are the translations of these examples into Chinese:

在逆境中，她展现出了钢铁之力，不管遇到什么挑战都没有放弃。
他有着钢铁之心，无论别人怎么说他都坚定地坚持自己的原则。
她以钢铁之心闻名，无论目标有多难都一直努力达成。