他的钢铁意志是他成功的关键。

His iron will is the key to his success.

他凭借钢铁意志克服了所有困难。

He overcame all difficulties with an iron will.

她的钢铁意志让她在逆境中坚持下来。

Her iron will kept her going through adversity.

领导者需要有钢铁意志才能带领团队前进。

A leader needs an iron will to guide the team forward.

他们展示了钢铁意志，没有被任何挑战打倒。

They showed an iron will and were not defeated by any challenge.