Sad mood, is a waste of short life, there is no necessary.

伤感一类的情绪，是对短暂的生命的浪费，实在没必要。

youdao

Those or naive longings thoughts are years or grinding gone radiance, off enclosure, only sad mood in and wait.

那些或天真或憧憬的思想被岁月磨得不见了光辉，褪去了外壳，只剩下可悲的年华在守侯着。

youdao

However, one of the most sad mood is clearly against love you still put the smile, and give her best wishes to you.

然而，对我来说，世上最难过的心情，是明明爱你却还摆出违心的笑容，对你和她祝福。

youdao

So,this is kind of a mood album, it's the extreme of moods, you know,Achin,' sad slow, sultry Country ballads and then the Shakin' is all up-tempo, kind of crazy,fast, a little bit throw-back Country, a little bit throw-back old soul or Motown."

VOA: standard.2010.06.18

If you are sad, that affects my own mood.

如果你伤心，我的心情会受到影响。

耶鲁公开课 - 心理学导论课程节选

Like those with actual SAD a mood disorder in which people experience depressive symptoms at predictable points during the year municipal bond investors are prone to emotional swings as bond prices move up and down in fairly predictable seasonal patterns.

FORBES: Muni Bond Manager's Journal: Seasonal Affective Disorder

But the mood is sad.

ECONOMIST: Saxon snapshots

The energy in the dugout was very sad and we weren't really in the mood.

NPR: Jennings, Rays Shaken By Happ Getting Hit In Head