A lonely mood is akin to a lingering sadness, but with a particular referent; it's sadness about not having someone in your life where caring and deep understanding is mutually felt.

寂寞的心境犹如挥之不去的悲伤，但却有特定的所指；它是一种因无人出没于你那本该被关怀和深切理解所相互渗透的生活的悲伤。

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One focused on mood, and inquired about feelings like anxiety, sadness, depression and anger.

一份表格的问题关注志愿者的心情，为志愿者关于他们的焦虑、压抑、悲伤和愤怒问题；

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In the second sense, the word describes a major mood disorder of intense sadness, despair, paralysis, etc. that does disrupt your capacity to live a normal life.

从第二层意思来看，这个词描述的是一个极度悲伤、绝望、瘫痪等等的重大情绪紊乱。这个时候，干扰了人们正常生活的能力。

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He says his mood of high expectations and happiness has been transformed into a heavy mind and sadness with the news of the terrorist attack in Islamabad.

VOA: standard.2009.10.05

I'm not going to suggest it wasn't a blow for us, but I have to say the mood here is one of resigned sadness rather than shock or anger.

BBC: Losing the FA contract

One focused on mood, and inquired about feelings like anxiety, sadness, depression and anger.

ECONOMIST: One reason dieting does not work

The mood in America after the Boston bombings generally seems one of sadness and horror but not one of anger or ramped-up patriotism.

BBC: Boston bombing: A changed US reaction to terror