我觉得他当时有点闷闷不乐。

He seemed a bit subdued to me.

《牛津词典》

他看上去有点闷闷不乐的样子。

He looked a little morose.

youdao

在她离开前他就注意到了，但他惊讶的是她依然有点闷闷不乐的。

He had noticed this before she had left, but he was surprised that she was still so sullen.

youdao

简：说实话，我也不怎么喜欢他，他看上去有点无聊并且一点也不活跃，而且总是显得闷闷不乐的样子。

Jane: to tell the truth. I don't really like him either. He's kind of boring and not very active. He always looks unhappy too.

youdao

简：说实话，我也不怎么喜欢他，他看上去有点无聊并且一点也不活跃，而且总是显得闷闷不乐的样子。

Jane: to tell the truth. I don't really like him either. He's kind of boring and not very active. He always looks unhappy too.

youdao