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| ADJ usually before noun |
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| /əˈkjuːt/ |
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| 1 | very serious or severe 严重的 | an acute shortage of medical supplies 医疗用品的严重短缺 | | | 1a | an acute illness is one that becomes very bad very quickly （疾病）急性的 | | an acute ear infection 急性耳感染 | | | | 1b | used for describing pain that is very strong and sharp （痛）剧烈的 | | |
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| 2 | used for describing the senses and abilities of someone who notices things very quickly and easily 灵敏的；敏锐的 | an acute sense of smell 灵敏的嗅觉 | | her acute observations on life and love 她对生活和爱情的敏锐观察 | |
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| 3 | an acute angle is less than 90 degrees 锐角的 |
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| 4 | an acute accent is the mark ´ above a letter in some languages that shows it is pronounced in a particular way 尖（重）音的 |
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| DERIVED WORD |
| acuteness noun U |
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