她太害羞了，不敢在人群面前发表演讲。

She's too ___shy to give a speech in front of a crowd.

别害羞——大胆介绍一下自己吧！

Don't be ___shy—just introduce yourself!

我弟弟受到表扬时露出了羞涩的微笑。

My brother gave a ___shy smile when he was praised.