Her condition took a sharp turn for the worse.

她的病情突然急剧恶化。

《柯林斯英汉双解大词典》

The patient took a turn for the worse.

病人的病情恶化了。

《新英汉大辞典》

However, his health took a rapid turn for the worse several months later.

然而，几个月后，他的健康状况迅速恶化。

youdao

I grew concerned that I might take a turn for the worse.

VOA: special.2011.01.30

But his health took a turn for the worse in early 2000 and he needed to get serious about being upgraded on the list.

VOA: standard.2010.02.26

The trouble is that all three of the conditions have taken a turn for the worse.

ECONOMIST: Income inequality

In a sense, he has: Bristol-Myers Squibb's fortune has taken a massive turn for the worse.

FORBES: Bristol Radically Lowers Estimates

Things started to turn for the worse around the time Tom DeLay left the House under an ethical cloud.

NPR: End of the Road for Frist; What Next for Hastert?