用作名词 (n.)
- He came home tired and morose after a long and unsuccessful day's work.
一整天不顺心的工作之后,他回到家时很疲倦且闷闷不乐的。
- I suppose they lost at the match,because I can't think of any other reason why you should have such a long face.
我猜想他们比赛输了,因为我无法想出其他原因来解释你这闷闷不乐的样子。