He felt that his brother had behaved disgracefully.

他觉得他兄弟表现得丟人现眼。

When one student behaves disgracefully, it reflects badly on the whole class, even the whole school.

一个学生的不光彩行为会给整个班级、甚至整个学校带来很坏的影响。

He's a big child. He behaves disgracefully.

他是个大孩子，他的举动太丢人。

I consider him to have acted disgracefully.

我认为他的行为不光彩。

The firm exploits its workers disgracefully.

该公司无耻地剥削工人。