yawning

a. 打著呵欠的、裂著大口的

學術名詞

• 呵欠：獸醫學

英文釋義

1. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
2. gaping open as if threatening to engulf someone or something
3. with the mouth wide open indicating boredom or sleepiness
4. showing lack of attention or boredom