If he is in a blue mood, what kind of mood is he in?

如果他现在心里很郁闷，应该要用一种什么样的情绪来形容呢？

You are always in a blue mood these days, What's the matter?

最近你总是闷闷不乐的，出了什么事情吗？

In sharp contrast to her mood, the clouds were breaking up to reveal a blue sky.

乌云渐渐散开，露出了蓝天，这和她的情绪形成了鲜明的对照。

I used to be in blue mood and gray weather a lot. And I now understand those were just days plainly wasted away, after having seen many parts of the world and changed many employers.

过去太多沉浮于忧郁和灰暗的心情气候中，现在明白过来，在逛了世界许多地方和换了许多次老板之后，那些日子纯粹是被浪费掉了。

But a bad mood often seems to arrive out of the blue, a gloomy weather pattern that settles in from everywhere all at once.

但坏情绪似乎总是从天而降，就像忽然笼罩大地的阴云。