 
  
 de·terio·rate [dɪˈtɪəriəreɪt, 美 -ˈtɪriə-] 动词 不及物动词
1. deteriorate (become worse):
-  deteriorate condition, situation
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-  deteriorate sales
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-  deteriorate morals
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-  deteriorate tumour
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-  deteriorate a discussion
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2. deteriorate (disintegrate):
-  deteriorate building, structure
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-  deteriorate building, structure
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-  deteriorate building, structure
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-  deteriorate leather, wood
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-  deteriorate leather, wood
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-  deteriorate food
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-  deteriorate food
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 | I | deteriorate | 
|---|---|
| you | deteriorate | 
| he/she/it | deteriorates | 
| we | deteriorate | 
| you | deteriorate | 
| they | deteriorate | 
| I | deteriorated | 
|---|---|
| you | deteriorated | 
| he/she/it | deteriorated | 
| we | deteriorated | 
| you | deteriorated | 
| they | deteriorated | 
| I | have | deteriorated | 
|---|---|---|
| you | have | deteriorated | 
| he/she/it | has | deteriorated | 
| we | have | deteriorated | 
| you | have | deteriorated | 
| they | have | deteriorated | 
| I | had | deteriorated | 
|---|---|---|
| you | had | deteriorated | 
| he/she/it | had | deteriorated | 
| we | had | deteriorated | 
| you | had | deteriorated | 
| they | had | deteriorated | 
