[VERB 动词]恶化；变坏；衰退 If something deteriorates, it becomes worse in some way.
[V]
There are fears that the situation might deteriorate into full-scale war...
人们担心形势可能恶化而演变成一场全面战争。
The weather conditions are deteriorating...
天气变得越来越糟。
Grant's health steadily deteriorated.
格兰特的健康状况持续恶化。
deterioration
...concern about the rapid deterioration in relations between the two countries.
对两国关系迅速恶化的担忧
...the slow steady deterioration of a patient with Alzheimer's disease.
一名阿尔茨海默病患者病情的持续缓慢恶化
Oxford
de·teri·or·ate/dɪˈtɪəriəreɪt; NAmEdɪˈtɪriəreɪt/verb[intransitive ]to become worse 变坏；恶化；退化◆Her health deteriorated rapidly, and she died shortly afterwards.她的健康状况急剧恶化，不久便去世了。◆deteriorating weather conditions不断恶化的天气状况deteriorateinto sth ◆The discussion quickly deteriorated into an angry argument.这场讨论迅速演变成愤怒的争吵。▶de·teri·or·ationdeteriorationdeteriorations/dɪˌtɪəriəˈreɪʃn; NAmEdɪˌtɪriəˈreɪʃn/noun[uncountable , countable ]◆a serious deterioration in relations between the two countries两国关系的严重恶化deterioratedeterioratesdeteriorateddeterioratingde·teri·or·ate/dɪˈtɪəriəreɪt; NAmEdɪˈtɪriəreɪt/de·teri·or·ation/dɪˌtɪəriəˈreɪʃn; NAmEdɪˌtɪriəˈreɪʃn/
1to become worse: Ethel’s health has deteriorated. America’s deteriorating economyRegisterIn everyday English, people usually say get worse rather than deteriorate:· Her health got worse.· The situation is getting worse.2deteriorate into something to develop into a bad or worse situation: The argument deteriorated into a fight.—deterioration /dɪˌtɪərɪˈreɪʃən $ -ˌtɪr-/ noun [uncountable]THESAURUSdeteriorate to become worse: · Air quality is rapidly deteriorating in our cities.· Living conditions here have deteriorated in the past few years.get worse to become worse. Get worse is less formal and more common than deteriorate in everyday English: · My eyesight seems to be getting worse.· He’s never been well-behaved, but he’s getting even worse.go down to become gradually worse – used especially about the standard of something: · The hotel’s gone down since its management changed.· Nick’s teachers say that his work has gone down recently.go downhill to become much worse and be in a very bad condition, especially after a particular time or event: · During the recession the business began to go downhill.· Her health went downhill rapidly after Christmas.decline especially written to become gradually worse – used especially about standards of living, education, health etc: · After the war, the standard of living declined.· Over the years, the standard of public transport has declined.degenerate formal to become worse, or to become something bad instead of something good: · Relations between the two countries have degenerated.· The debate degenerated into an argument between the two sides.escalate to become much worse very quickly – used especially about fighting, violence, or a bad situation: · Further violence could escalate into a full-scale armed conflict.· The political crisis escalated.spiral out of control to become worse in a way that cannot be controlled and is extremely serious and worrying: · Police say that the violence has spiralled out of control.· Scientists are worried that global warming could soon spiral out of control.· Costs have been spiralling out of control.