To go in for technical innovation, one must have the fearless spirit of a pathbreaker.

搞技术革新就要有一股不怕困难的闯劲。

《新英汉大辞典》

Made a searching and fearless inventory of our virtues and strengths.

大胆的探索自己拥有的美德和优势。

youdao

Living a fearless life gives you a confidence that is visible to others.

无所畏惧的生活会给我们带来自信，别人是可以看得到的。

youdao

With a fearless spirit I went to the place and got close enough to the ruined cabin to throw a stone against it.

VOA: special.2009.10.31

She was a fearless woman of great energy and skill.

VOA: special.2009.05.10

The youngest speaker at the 1963 March on Washington, a fearless advocate and a distinguished member of Congress, John Lewis has earned our lasting gratitude for a lifetime dedicated to the pursuit of equality and justice for all.

WHITEHOUSE: 2010 Presidential Medal of Freedom Ceremony

When De Sole left, his longtime Italian employees at Gucci showed their devotion with a solid-silver statuette featuring him as a fearless sea captain steering a wheel made of Gucci 'G's.

WSJ: The House That Gucci Built

Lynch was a fearless long-cycle investor, buying a stock like Fannie Mae when nobody wanted it, and holding on.

FORBES: Truth in packaging