1
be lethargic
描述暂时或长期的状态，后常接原因。
After the heavy meal, he felt lethargic and unable to concentrate.
饱餐一顿后，他感到昏昏欲睡，无法集中精力。
无精打采的；缺乏活力的
先理解核心含义，再看它在真实句子里的用法。
无精打采的；缺乏活力的
Sluggish and lacking energy or alertness.
After the heavy meal, he felt lethargic and unable to concentrate.
饱餐一顿后，他感到昏昏欲睡，无法集中精力。
指身体或精神上的疲倦无力
迟缓的,缓慢的
Sluggish, slow.
缺乏警觉或活动的
deficient in alertness or activity
冷漠的,无动于衷的
Indifferent, apathetic.
After the long flight, I felt too lethargic to even unpack my suitcase.
长途飞行后，我感到无精打采，甚至连行李箱都不想打开。
AI contextual example
The hot weather made everyone in the office lethargic and slow to respond.
炎热的天气让办公室里的每个人都无精打采、反应迟缓。
AI contextual example
He was so lethargic that he spent the whole morning staring at the wall.
他当时无精打采，整个早上都盯着墙发呆。
AI contextual example
bullfrogs became lethargic with the first cold nights
牛蛙在初寒的夜晚变得无精打采。
WordNet
描述暂时或长期的状态，后常接原因。
After the heavy meal, he felt lethargic and unable to concentrate.
饱餐一顿后，他感到昏昏欲睡，无法集中精力。
强调主观感受，常与时间或原因连用。
She feels lethargic every afternoon around 3 o'clock.
她每天下午三点左右都会感到无精打采。
强调从活跃到不活跃的变化，常用搭配become或get。
As the meeting dragged on, the audience became lethargic.
随着会议拖延，听众变得无精打采。
Not this
I am suffering from lethargic.
Use this
I am suffering from lethargy.
在介词from后应使用名词形式“lethargy”而非形容词“lethargic”，因为from是介词，需要宾语。中文中“昏睡”可兼作名词和形容词，但英语需区分词性。
Not this
I feel very lethargy today.
Use this
I feel very lethargic today.
在系动词feel后应使用形容词“lethargic”作表语，而非名词“lethargy”。受中文影响，学习者易混淆形容词与名词形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
感到无精打采
I always feel lethargic after a long day at work.
工作一整天后我总是感到无精打采。
无精打采的状态
The patient lay in a lethargic state, barely responding to questions.
病人处于无精打采的状态，对问题几乎没有反应。
变得昏昏欲睡
He becomes lethargic whenever the weather is hot and humid.
每当天气又热又潮湿时，他就变得昏昏欲睡。
饱餐后无精打采的
She felt lethargic after the heavy meal and wanted to lie down.
饱餐一顿后她感到无精打采，想躺下来。
萎靡不振的经济
The country's lethargic economy has frustrated its young job seekers.
该国萎靡不振的经济让年轻求职者感到沮丧。
缓慢的节奏
The project advanced at a lethargic pace due to constant delays.
由于不断延误，项目以缓慢的节奏推进。
Use lethargic naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：把 lethargic 看成 'let' + 'hargic'，想着 'let it be'——什么都不想管，懒洋洋、行动迟缓。
语域：mixed 常见场景：medical and health descriptions、formal essays and reports、literary or narrative prose lethargic 属于较正式、书面化的用词；在不同搭配中语域稍有变化：描述身体缺乏精力时常见于医疗或健康语境，描述冷漠态度时多用于正式或文学性叙述。日常口语里更常说 tired、sluggish 或 lacking energy，但用 lethargic 也不算错，只是语气偏正式。
通常作表语或定语，描述缺乏活力或警觉的状态。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.