Be not in the mood.

没有心情做某事。

youdao

Because not many people had a bank account or easy access to credit, 'mood' spending had to be in cash - so if you didn't have the cash, you couldn't spend it.

因为不是很多人都有一个银行账户或能轻易获得贷款。‘随心’消费应该以现金为准——如果你没有那么多现钱，就不要消费。

youdao

If the personis just in a bad mood (maybe because of something you did, maybe not)you might be able to lighten the mood with a little bit of playfulness.

如果那个人只是情绪不好（可能是因为你做了什么事情，也可能不是），或许你能通过诙谐的玩笑减轻他的这种情绪。

youdao

When your house is on fire, you may not be in the mood to hear about an impending cancer epidemic that threatens your neighborhood, so I hesitate to bring up this topic.

CNN: What if carbon dioxide were as black as oil?

Barca were not in the mood to be lenient and after Messi curled a 30-yard free-kick narrowly wide and forced Pyatov to catch his cheeky chip, they doubled their advantage.

BBC: Barcelona 5-1 Shakhtar Donetsk

The digital world is new, and the real gains and losses of the Internet era are to be found not in altered neurons or empathy tests but in the small changes in mood, life, manners, feelings it creates in the texture of the age.

NEWYORKER: The Information