n.睡意，瞌睡

1. This usually causes only minor discomfort, such as a skin rash, headache or sleepiness.
这通常只会引起轻微的不适，如皮疹、头痛或嗜睡。
2. Most experts in sleep behavior agree that there is virtually an epidemic of sleepiness in the nation.
大多数研究睡眠行为的专家都认为，在这个国家，嗜睡实际上是一种流行病。
3. Their yawning seems to have nothing to do with sleepiness or boredom—quite the reverse—but it does precede a change in activity level.
他们打哈欠似乎与困倦或者无聊没有任何关系，但恰恰相反，打哈欠这一行为的确出现在了活动水平的变化之前。
4. A 2008 British study found that compared to getting more nighttime sleep, a mid-day nap was the best way to cope with the mid-afternoon sleepiness.
2008年英国的一项研究发现，与获得更多的夜间睡眠相比，午间小睡是应对午后困倦的最佳方式
After a long day at work, I couldn't resist the overwhelming sleepiness that washed over me.
工作了一整天后，我无法抗拒阵阵袭来的浓浓睡意。
The sleepiness of the warm summer afternoon made it difficult to keep my eyes open during the meeting.
炎热夏日下午的困倦让我在会议中难以保持眼睛睁开。
A cup of coffee in the morning helps combat my natural sleepiness and gets me ready for the day.
早晨一杯咖啡有助于对抗我的自然困倦，让我为一天做好准备。
The medication's side effect was an overwhelming sense of sleepiness, making it hard for her to stay awake.
这种药物的副作用是强烈的困倦感，让她很难保持清醒。
The gentle lullaby and the dim lighting in the room induced a peaceful sleepiness in the baby.
轻柔的摇篮曲和房间内昏暗的光线让宝宝感到一种宁静的困意。
Despite his best efforts to stay focused, the late-night study session left him battling with sleepiness.
尽管他努力保持专注，深夜的学习还是让他与困倦做斗争。
The long drive coupled with the monotonous highway scenery加剧了他的sleepiness.
长途驾驶加上单调的高速公路景色使他更加困倦。
The cool breeze blowing through the open window failed to alleviate her sleepiness on that lazy Sunday afternoon.
那个慵懒的周日下午，从打开的窗户吹进的凉风也没能减轻她的困意。
She attributed her constant sleepiness during the day to her poor quality of sleep at night.
她把自己白天持续的困倦归咎于夜间睡眠质量差。
A short nap after lunch can effectively reduce post-meal sleepiness and boost productivity in the afternoon.
午餐后小憩一会儿能有效减少餐后困倦，提高下午的工作效率。