deteriorate

柯林斯词典

1. V-I If something deteriorates, it becomes worse in some way. 恶化
There are fears that the situation might deteriorate into full-scale war. 人们担心局势会恶化为全面战争。
2. deteriorationN-UNCOUNT 恶化
...concern about the rapid deterioration in relations between the two countries. …对两国关系迅速恶化的担忧。

We could see his health deteriorating week by week .
Unfortunately the survey shows that children's health is deteriorating in many areas .
As the company's financial outlook deteriorated, several directors resigned .
My eyesight began to deteriorate quite rapidly.
We knew that, for the children's sake , we had to prevent our relationship from deteriorating any further .