On bad days I even felt suicidal.

赶上不顺的日子，我都觉得不想活了。

《牛津词典》

Stock that falls sharply on bad news.

一有坏消息便急剧下跌的股票。

youdao

On bad days I would say this method is terrible.

在不好的时候我会说这种办法糟透了。

youdao

And this traditional business model has not worked very well on the Internet, especially not in a bad economy.

VOA: special.2009.04.20

Bad things can happen, so it's really, really hard to just focus on getting things right and not winning the argument.

坏事情总会发生，所以要想将精力,集中于把事情做好,而不是去赢得这场争论真的很难。

耶鲁公开课 - 金融市场课程节选

A huge amount about what we know on diet and health-- like is too much sugar bad for you?

我们所知的大部分关于饮食和健康的信息,比如吃太多糖是否对身体不好

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Treasurys stop rallying on bad news overseas and bad news overseas stops getting our attention.

FORBES: There is also some possibility that the world won't end, you know

"Revenge Wears Prada" picks up eight years after Andy parted ways with Miranda on bad terms.

CNN: 'Devil Wears Prada' book sequel in the works

And if you left your employer on bad terms, things could get really nasty.

FORBES: 401(k)s: Far More Dangerous Than IRAs (March 2, 2001)