- n. 哈欠；裂口
- 1.She yawned during his lecture.
- 2.He smothered a yawn behind his hand.
- 3.His speech made me yawn.
- 1.an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
- 2.utter a yawn, as from lack of oxygen or when one is tired
- 3.be wide open
- 呵欠; 打哈欠; 打呵欠; 裂开;
- dehisce yawn
- yawn yawn
- Energy Yawn