哈欠的英语单词
哈欠是一种属条件反射的深呼吸活动，人在疲倦时大脑神经支配的一种生理反应，在日常生活中表达沉闷、瞌睡、或舒缓紧张情绪，一次打哈欠的时间大约为6秒钟，在这期间人闭目塞听，全身神经、肌肉得到完全松弛。那么你知道哈欠的英语单词是什么吗?下面来学习一下吧。
哈欠英语单词：
yawn
哈欠的英语例句：
打哈欠打哈欠的动作
The act of yawning.
他打了个哈欠，然后挠挠下巴。
He yawned and scratched his chin.
他坐起身,伸伸懒腰,打了个哈欠。
He sat up and stretched and yawned.
她又忍住了哈欠，竭力显出感兴趣的样子。
She stifled another yawn and tried hard to look interested.
她的丈夫打了个哈欠，闭上了眼睛。
Her husband groans and closes his eyes.
她打了个哈欠，又刻意地看了看手表。
She yawned and looked pointedly at her watch.
他伸了伸懒腰，打了个哈欠。
He stretched and yawned lazily.
她娇嗔地对着我的脸打了一个哈欠。
She yawned gracefully in my face.
这部电影只能令人哈欠连天
The movie was nothing more than one big yawn.
尽管如此，一些科学家依然宣称，找到了性与哈欠之间的联系，不只是“上床时间”的暗示。
Some scientists, though, still claim to find a tie between sex and yawning, and not just as a "time for bed" hint.
普林斯顿大学的科学家发现，打一个大大哈欠可以调节人脑温度，避免人脑过热。
Scientists at Princeton University found a big yawn can regulate thetemperature of the brain and prevent over-heating.
一份新的报道显示，哈欠能够帮助大脑保持凉爽，鼻窦在这个过程中所起的作用就像是风箱。
Yawning helps keep the brain cool, and the sinuses play a role in thatprocess by acting as bellows, a new report suggests.
微笑，蹙额，提眉，哈欠和冷笑都传递着信息。
A smile, frown, raised eyebrow, yawn, and sneer all convey information.
他轻轻笑了笑，然后伸出双臂，打了个大哈欠。
He chuckled, then stretched out his arms and yawned gigantically.
摄像机记录了这些孩子是否观察到了她的举动，如果观察到了的话，是否也打起哈欠。
A camera recorded whether the kids were watching her and if so, whether they yawned, too.
“说到天气了，”我打了个哈欠。
“Talk of weather.” I yawned.
换言之，若作品中没有令人惊讶之处，它只不过像是个哈欠。
In other words, if there are no surprises, it's just a yawn.
原因在这里：日本豆面酱里含促进褪黑激素产生的氨基酸，该褪黑激素是一种可以引起哈欠的天然的荷尔蒙。
Here’s why: Miso contains amino acids that may boost the production ofmelatonin, a natural hormone that can help induce the yawns.
其中一人在“哈欠袭来”时能做出预判，于是盖洛普便让她在每次发作前后都测下自己的体温。
He had asked one of the patients—who could predict her "yawningattacks"—to take her own temperature before and after the episode, he said.
哈欠的英语单词
