sullen

阴沉的天空让整个下午都显得压抑。

The ___sullen sky made the whole afternoon feel depressing.

他那忧郁的性格让他总是沉浸在悲伤的音乐中。

His ___sullen nature makes him always indulge in sad music.

她整个下午都闷闷不乐地坐在沙发上，一句话也不说。

She sat on the couch all afternoon with a ___sullen look, refusing to speak.