She tried to be brave, but her courage failed her.

她想勇敢，但却鼓不起勇气。

《牛津词典》

Take it easy and be brave.

放轻松，勇敢点。

youdao

They encouraged me to be brave and confident.

他们鼓励我变得勇敢和自信。

youdao

They wanted to start a fight. They would wait for someone to be brave enough to try to hit it off.

VOA: special.2010.01.17

So I want to ask you now, and be brave and speak out, in your reading of the story did anything of that nature strike you?

我希望大家能勇敢的说出来，在你们阅读中有没有发现什么奇怪的地方？

耶鲁公开课 - 旧约导论课程节选

So okay, let's have a look. Did anyone choose -- raise your hands, Be brave here.

好的,我们看一看,有人选了吗,请大家踊跃举手

耶鲁公开课 - 博弈论课程节选

Be brave like the small child who saw and said that the emperor was wearing no clothes.

ECONOMIST: Carbon tax or trade?

His journalists had to be brave, and one way to show their pluck was to survive working with Jim.

ECONOMIST: Jim Michaels

Given that many Greeks thrive off that bureaucracy, Mr Karamanlis must be brave as well as a quick learner.

ECONOMIST: Greece's election