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 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

It was solidarity with his allies that led him to be such a competent and brave officer.

是他同盟友的团结,让他成为勇敢能干的船长。

耶鲁公开课 - 心理学导论课程节选

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

You have to be brave and you have to head it.

BBC: Sunderland boss Bruce fumes at defence & officials