昏昏沉沉 drowsy
Explanation
形容人神志不清，精神萎靡不振的状态。
Describes a state of being unclear-headed, mentally sluggish, and lacking energy.
Origin Story
话说唐朝时期，有个书生名叫李明，寒窗苦读十年，准备参加科举考试。临近考试，李明压力巨大，夜不能寐，常常感到昏昏沉沉，精神萎靡。他白天昏昏沉沉地读书，晚上昏昏沉沉地睡觉，学习效率极低。考试当天，李明更是昏昏沉沉，脑袋一片浆糊，试卷上写的东西东一句西一句，毫无章法。结果可想而知，他落榜了。李明意识到自己之前的学习方法不对，应该劳逸结合，保证充足的睡眠，才能保持头脑清醒，才能在考试中发挥出最佳水平。从那以后，李明调整了学习策略，每天都保证足够的睡眠时间，并定期进行体育锻炼，不再昏昏沉沉，学习效率也提高了不少，最终在下一届科举考试中金榜题名。
In the Tang Dynasty, there was a scholar named Li Ming who studied hard for ten years to take the imperial examination. As the exam approached, Li Ming felt immense pressure. He couldn't sleep at night and often felt drowsy and sluggish. He studied drowsily during the day and slept drowsily at night, resulting in very low learning efficiency. On the day of the exam, Li Ming was even more drowsy, his mind a complete blank. The things he wrote on the exam paper were disjointed and lacked structure. As expected, he failed. Li Ming realized that his previous study method was wrong. He needed to balance work and rest, to ensure adequate sleep to maintain a clear mind and to perform at his best in the exam. From then on, Li Ming adjusted his learning strategy; he ensured he got enough sleep every day and regularly exercised, eliminating his drowsiness. His learning efficiency improved significantly, and he eventually passed the imperial examination in the next session.
Usage
用于描写人精神萎靡、神志不清的状态，多用于口语。
Used to describe a state of mental sluggishness and unclearheadedness, mostly used in spoken language.
Examples
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他最近总是昏昏沉沉的，看起来很疲惫。
tā zuìjìn zǒngshì hūnhūnchénchén de, kàn qǐlái hěn píbèi
He has been drowsy lately and looks very tired.
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连续加班让他感到昏昏沉沉，无法集中精力工作。
liánxù jiābān ràng tā gǎndào hūnhūnchénchén, wúfǎ jízhōng jīlí gōngzuò
Working overtime made him feel drowsy and unable to concentrate on work.
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考试前夜，他因为紧张而昏昏沉沉地睡不着觉。
kǎoshì qiányè, tā yīnwèi jǐnzhāng ér hūnhūnchénchén de shuìbuzháo jiào
The night before the exam, he was too nervous to sleep and felt drowsy.