他们竞争靠的是技术和顽强意志。

They competed with skill and tenacity.

《牛津词典》

意识的独立性和顽强的意志力是不是一个东西？

Are the independence of the mind and the great strength of will the same stuff?

youdao

从主体看，要具备勇于创新的观念、完善的文化准备、强烈的兴趣和顽强的意志力。

As for subject, one must be cultured and brave new ideas with great interest and a strong will.

youdao

And both Southerners and Northerners shared both the reality and the spirit of that westward movement.

而且南方人和北方人都有,西进运动的历练和顽强的精神

耶鲁公开课 - 美国内战与重建课程节选