"melancholy" in Chinese (Simplified)
忧郁
Definition
一种深深的悲伤感，通常没有明显的原因；一种安静温和的忧愁。
Usage Notes (Chinese (Simplified))
较为正式或文学用语，形容温和、持续的忧郁。常用于情绪、人、氛围（如 'a melancholy song'）。不等同于“抑郁症”的强烈。多见于诗歌或散文。
Examples
He felt a deep melancholy after the summer ended.
夏天结束后，他感到深深的**忧郁**。
The painting has a melancholy mood.
这幅画有一种**忧郁**的氛围。
A sense of melancholy filled the empty house.
一股**忧郁**感充满了空荡荡的房子。
There's something melancholy about rainy afternoons.
雨天下午总有点**忧郁**的感觉。
She played a melancholy tune on the piano that made everyone quiet.
她在钢琴上弹奏了一首**忧郁**的曲子，让所有人都安静下来。
His smile had a hint of melancholy, even on happy days.
即使在快乐的日子里，他的微笑也带着一丝**忧郁**。