melancholy

听着那首老歌，他心中涌起一阵无名的忧郁。

Listening to that old song filled him with a deep sense of ___melancholy.

看着秋叶飘落地面，一阵忧伤涌上她的心头。

A wave of ___melancholy washed over her as she watched the autumn leaves drift to the ground.

走过童年故居空荡荡的房间，他感到一种无声的忧伤。

He felt a quiet ___melancholy walking through the empty rooms of his childhood home.