他是一个无畏的战士。

He is a ___fearless fighter.

雅尼斯对此了如指掌，但他无畏且固执，正如人们描述的那样，愿意努力工作并决心成功。

Yannis knew all about it, but he was ___fearless and stubborn, as people described him, willing to work hard and determined to succeed.

她以无畏的态度面对挑战。

She faced the challenge with a ___fearless attitude.