"His mind deteriorated"
"Her condition deteriorated"
同义词： devolve drop degenerate
以上来源于: WordNet
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。
deterioration N-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。
In my point of view, we are in a prime time to curb the problem from deteriorating.
在我看来，我们正处在阻止问题恶化的黄金时期。
The Arctic sea ice holds a central position in the Earth's climate system and it's deteriorating faster than expected.
北极海冰在地球气候系统中占据中心位置，并且它恶化的速度比预期的更快。
Cotman believes this hormone, which keeps neurons functioning, may prevent the brains of active humans from deteriorating.
考特曼认为，这种保持神经元功能的激素可能会阻止活跃的人的大脑恶化。
military surge in Iraq, said multiple brigades of combat, support and training forces are needed to turn around a deteriorating situation.
VOA: standard.2009.10.15
He says there have been improvements, in areas such as education and building infrastructure, but in other areas the situation is deteriorating.
VOA: standard.2009.10.01
The U.S.and NATO commander in Afghanistan, Army General Stanley McChrystal, has said conditions in Afghanistan are deteriorating.
VOA: standard.2009.09.16
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