He was not brave enough to report the loss of the documents.

他当时不够勇敢去报失文件的丢失。

《柯林斯英汉双解大词典》

You mean plastic surgery?I'm not brave enough.

陶子：“整形手术？我可没那胆量。” …

youdao

But I just don't know what to do, maybe I am not brave enough.

但是，我却不知道要怎么做，或许是我不够勇敢。

youdao

After Faulkner, few northerners were brave enough to write about a South they did not know.

VOA: special.2010.01.03

The president watered these down a bit, but was not brave enough to veto.

ECONOMIST: Barack Obama and free trade

Heck, even the graduate assistant was not brave enough to move and pull the child away from the mess.

FORBES: Everyone's Crying For Joe Paterno, But Who Will Cry For The Children?

Maybe other companies can copy the Challenger idea, but most are not brave enough to give back to their employees.

FORBES: Thai Beverage Man Tan Passakornnatee Is On a Mission