哈欠

她打哈欠是对我打哈欠的条件反射。

Her yawn was a Pavlovian response to my yawn .

他张扬地打了个哈欠。

He gave an ostentatious yawn .

她打了个哈欠，又刻意地看了看手表。

She yawned and looked pointedly at her watch .

他站起身来，伸了个懒腰，打了个哈欠。

He stood up , stretched and yawned .

约翰打个哈欠，挠挠下巴。

John yawned and scratched his chin .

他伸了伸懒腰，打了个哈欠。

He stretched and yawned lazily .

她困得打着哈欠。

She yawned sleepily .

她伸了个懒腰，打了个大哈欠。

She stretched her arms out and gave a great yawn

他们看起来已经厌倦了这些演讲，直打哈欠。

They looked bored and yawned at the speeches .

他打了个哈欠，都懒得抬抬手遮一下嘴巴。

He yawns , not troubling to cover his mouth

她忍不住打了个哈欠。

She makes no attempt to stifle a yawn

克鲁克的眼皮耷拉下来，打了个哈欠。

Crook 's eyelids drooped and he yawned

闹钟确实响了，但我只是打了个哈欠，翻个身又接着睡着了。

The alarm did go off but all I did was yawn , turn over and go back to sleep .

他合上书，打了个哈欠，然后上床。

He closed the book , yawned , and went to bed .

她穿着简单的白T恤，喝着可口可乐，在屏幕上打哈欠。

Instead , she sports simple white tees , sips Coca-Cola and yawns on screen .

她打了个大哈欠，露出了有点歪的牙齿。另一名用户评论道，她没有“明星脸”。

She doesn 't have " the face of a celebrity , " another user remarked .

一些推特用户发布了这只大花猫打哈欠、睡觉以及做些猫咪常见的动作的视频。

A few Twitter users had posted videos of the animal yawning , falling asleep and basically just doing cat things .

如果你感觉某个人正在看你，你可以打个哈欠，看过去，如果那个人也打哈欠，你就知道的确是在看你了。

If you feel someone is looking at you , try yawning and look around . If they yawn , you know they were looking at you .

今年早些时候发表在《神经科学前沿》（FrontiersinNeuroscience）上的一项研究综述称，越来越多的研究人员认为，打哈欠这种人们对其还知之甚少的行为，其目的在于为大脑降温。

A growing number of researchers believe the purpose of this little-understood behavior is to cool the brain , says a research review published earlier this year in Frontiers in Neuroscience .

这一机制仍是不确定的，尽管有一位名叫奥利维耶·瓦卢辛斯基（OlivierWalusinski）的法国研究者提出打哈欠有助于促进大脑周围脑脊液的分泌，而这种液体能够引起神经活动的变化。

The mechanism is somewhat hazy - though oneFrench researcher , Olivier Walusinski , proposes that yawning helps to pumpcerebrospinal fluid around the brain , which could trigger a shift in neuralactivity .

猿打着哈欠并且仰慕他们淋着阳光的跳蚤。

The apes yawn and adore their fleas in the sun .

打哈欠在赛跑运动员等候比赛开始时很常见。

Yawning is common among runners waiting to begin a race .

忍住哈欠、笑、哭、抽泣等

Stifle a yawn , laugh , cry , sob , etc

啊，对不起，我实在忍不住打哈欠。

Oh , excuse me ; I can 't stop yawning .

你怎么一直打哈欠？

And why do you keep doing that with your mouth ?

他说从某方面上看打哈欠似乎与睡眠有关。

He says yawning seems linked in some way to sleeping .

你读到此时，可能便想打哈欠！

You may be yawning right now as you read this !

事实上，我们不知道为什么人们会打哈欠。

Fact is , we don 't know why people yawn .

当她努力忍住哈欠时，她的眼泪也出来了。

Her eyes watered as she tried to stifle a yawn .

他们如此疲劳以至于什么也不能做，只有打哈欠。

They were so tired they could do nothing but yawn .