sleepiness
n. 想睡，困倦；昏昏欲睡
近义词：exhaustion，drowsiness，somnolence，tiredness，lethargy，lassitude，torpor，wakefulness，
英英释义
Noun
- a very sleepy state;
"sleepiness causes many driving accidents"
例句
- Dull with sleepiness; sluggish.因困倦而迟钝; 懒怠的
- Produced or characterized by sleepiness.由困倦引起的，或以困倦为特征的
- Too much food induces sleepiness.吃得太饱会引起睡意。