那只知更鸟显然兴致勃勃，胆大得很。

The robin was evidently in a fascinating, bold mood.

youdao

犯人因绝望而越来越胆大妄为。

The prisoners grew increasingly desperate.

《牛津词典》

我本以为她不会胆大妄为地去做了那件事。

I didn't think she would have the brass neck to do that.

《牛津词典》

What could possibly be more presumptuous than the association of the beginning of one's own career, one's own literary career, with the birth of the Christian messiah?

还有什么能够比,把自己事业的开端，自己的文学生涯，与基督教救世主的诞生相提并论更胆大妄为的？

耶鲁公开课 - 弥尔顿课程节选

There's a fear here that the ambition of this bid for paternal light is presumptuous, perhaps it's even satanic Satan of course in the next book, Book Four will have his invocation to light.

人们会担心弥尔顿认为光与上帝差不多的想法,过于胆大妄为，或许是极恶的,当然，第四卷里的撒旦,也会祈求光明。

耶鲁公开课 - 弥尔顿课程节选

Virtue means for him a kind of manly self-assertion, audacity, ruthlessness, a reliance on one's own arms and calculated use of cruelty to achieve one's ends.

美德对他而言,是一种具男子气概的自作主张，胆大，冷酷，自助，且还会算计使用残忍手段,来达致目标。

耶鲁公开课 - 政治哲学导论课程节选