drowsiness and dullness manifested by yawning
同义词：oscitance
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
同义词：yawn??/??yawning??/??oscitance
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。