adj.昏昏欲睡的，懒洋洋的，没精打采的，慵懒的

The cat was lethargic after a long day of sunbathing.
这只猫在长时间晒太阳后显得懒洋洋的。
She felt lethargic and unproductive after staying up all night studying.
熬夜学习后，她感到昏昏欲睡，毫无效率。
The elderly man moved with a lethargic gait due to his age-related health issues.
由于年龄关系，老人走起路来步伐迟缓，精神不振。
Lethargy seemed to be setting in as the day progressed, making it hard for everyone to concentrate.
随着一天的推移，人们越来越昏昏欲睡，难以集中精力。
After the flu, he recovered slowly, still feeling lethargic and weak.
流感康复后，他仍然感到虚弱和无精打采。
His lethargic behavior indicated that he might be dealing with a low-grade fever.
他萎靡不振的行为表明他可能有低热。
The child's lethargic response to her mother's call was a cause for concern.
孩子对母亲呼唤的无精打采反应让母亲很担心。
Lethargy was a common symptom experienced by patients on heavy medication.
服用了大量药物后，患者普遍表现出疲倦无力的症状。
The rainy weather made everyone feel lethargic and reluctant to leave the house.
阴雨天让人感到慵懒，不愿出门。
She took a cup of coffee to shake off the morning lethargy and get ready for work.
她喝了一杯咖啡以驱赶早晨的昏沉，准备上班。