n.忧愁；苦恼
Unhappiness seems to be particularly common in car companies, which suffer from global overcapacity, and telecoms companies, which are being buffeted by a technological revolution. 忧愁似乎在遭受全球产能过剩的汽车公司尤为普遍，而电信公司又受技术革新打击。
His dark looks are a reflection of his unhappiness. 他阴郁的神情是内心苦恼的反映。
The unhappiness burnout causes can eventually threaten your job, your relationships, and your health. 这种苦恼的精疲力尽到最后可以威胁到你的你工作，你的友谊，和你的健康。
