be chagrined at

例句：

1. 1.She chagrined at the thought of being late again.
   她一想到又要迟到就感到尴尬。
2. 2.He chagrined at his own mistakes and decided to learn from them.
   他为自己的错误感到尴尬，并决定从中学习。
3. 3. The embarrassing moment made her chagrined at herself for not preparing better.
   那个尴尬的时刻让她对自己没有准备得更充分感到尴尬。