1. （情况）严重的；（感觉）强烈的
    You can use acute to indicate that an undesirable situation or feeling is very severe or intense.

    e.g. The war has aggravated an acute economic crisis...
           战争加剧了原本已很严重的经济危机。
    e.g. The report has caused acute embarrassment to the government...
           报告将政府置于窘境。

2. 急性的
    An acute illness is one that becomes severe very quickly but does not last very long.

    e.g. ...a patient with acute rheumatoid arthritis.
           患急性风湿性关节炎的病人
    e.g. ...an acute case of dysentery.
           急性痢疾病例

3. （感官）灵敏的
    If a person's or animal's sight, hearing, or sense of smell is acute, it is sensitive and powerful.

    e.g. In the dark my sense of hearing becomes so acute.
           黑暗中我的听觉变得异常灵敏。

4. 敏锐的；有洞察力的
    If you say that someone is acute or has an acute mind, you mean that they are quick to notice things and are able to understand them clearly.

    e.g. Into her nineties, her thinking remained acute and her character forceful...
           虽已年届九旬，她依然头脑敏锐，个性很强。
    e.g. His relaxed exterior hides an extremely acute mind.
           他表面上大大咧咧，内心却无比敏锐。

5. 锐角的
    An acute angle is less than 90°.

6. （标在元音等上面的符号）尖音的，重音的
    An acute accent is a symbol that is placed over vowels in some languages in order to indicate how that vowel is pronounced or over one letter in a word to indicate where it is stressed. You refer to a letter with this accent as, for example, e acute. For example, there is an acute accent over the letter 'e' in the French word 'café'.