The sullen girl refused to answer her mother's questions.

愠孩拒绝回答她母亲问题。

He looked up at the sullen sky.

他抬头看了一眼阴沉天空。

Afortiori the influence of Moloch made them become sullen.

何况莫洛克神影响也使他们变得忧起来。

Karen had withdrawn into sullen silence.

凯伦陷入到愠之中。

She continued sullen.

她依然闷闷不乐。