[医学] 病情的迅速发作并且症状严重：用来描述疾病，其特征是迅速而严重的发作。
"The patient has an acute appendicitis. 患者患有急性阑尾炎。"
"Acute infections need immediate care. 急性感染需要立即治疗。"
感官或智力的敏锐：形容某人能迅速感知微小变化，具备敏锐的观察力或理解力。
"She has an acute sense of smell. 她有敏锐的嗅觉。"
"His acute insight helped solve the problem. 他敏锐的洞察力帮助解决了问题。"
[数学] 小于90度的角：用来形容在几何学中，小于90度的角。
"An equilateral triangle has three acute angles. 等边三角形有三个锐角。"
"They calculated the acute angle between the lines. 他们计算了两条线之间的锐角。"
尖锐或激烈：用于描述某事物或情况的紧迫性和严重程度，常用于痛苦或情感等无形的体验。
"She has an acute hunger pang. 她有剧烈的饥饿感。"
"There was an acute shortage of resources. 资源严重短缺。"
声音的尖锐且高亢：用来描述高度音调或频率。
"The alarm gave an acute ringing sound. 警报发出了尖锐的铃声。"
"The acute sound pierced the night. 尖锐的声音刺破了夜空。"