A growing body of research now shows that yawning is nature's way of keeping our brains cool.
越来越多的研究表明，打哈欠是一种让大脑保持冷静的自然方式。
Support for this theory came from a study of yawning behavior in everyday life.
这一理论的支撑来自对日常生活中打哈欠行为的研究。
Will you be kind enough to give a penny to a poor boy who is yawning from hunger?
你可以给一个因饥饿而打哈欠的可怜孩子一个便士吗？
Their yawning seems to have nothing to do with sleepiness or boredom—quite the reverse—but it does precede a change in activity level.
他们打哈欠似乎与困倦或者无聊没有任何关系，但恰恰相反，打哈欠这一行为的确出现在了活动水平的变化之前。
The empirical evidence, such as it is, suggests an altogether different function for yawning—namely, that yawning prepares us for a change in activity level.
很多实验证据证实了打哈欠的另一个不同的功能，它能让我们做好准备，改变活动状态。
There's a yawning gap between rich and poor.
贫富之间有一条鸿沟。
A completely different theory holds that yawning assists in the physical development of the lungs early in life, but has no remaining biological function in adults.
另一种完全不同的理论认为，打呵欠有助于生命早期肺部的生理发育，但对成年人没有任何剩余的生理功能。
Experiments have also cast serious doubt on the belief that yawning is triggered by a drop in blood oxygen or a rise in blood carbon dioxide.
对于打哈欠是由血液中的氧气减少或血液中的二氧化碳增加引起的这种观点，一些实验也同样提出了严重的质疑。
This revealed that coughing, sneezing, yawning, lapping water reminiscent of bath time and the squeaking of toys all activated a part of the brain known to process speech.
研究发现，咳嗽、打喷嚏、打哈欠、让人联想到洗澡的冲水声、玩具发出的吱吱声都会激活婴儿负责语音处理的大脑部位。
The researchers found that those who breathed through the nose rather than the mouth were less likely to yawn when watching a video of other people yawning.
研究人员发现，在看别人打呵欠的视频时，用鼻子呼吸的人比用口腔呼吸的人打呵欠的几率要小。
The senior Gallup also happens to be a leading expert on the science of yawning and other widespread evolved traits.
巧合的是，老盖洛普也是一名主持对呵欠和其他引发广泛关注的特质进行研究的专家。
It's a "unified theory tying yawning, sinus ventilation, and brain cooling into a neat little package," Hack said.
这项理论“将打哈欠、鼻窦通畅、脑部降温等问题用一个小小的数据包串在了一起，”哈克说道。
It's now believed yawning operates like a radiator for birds and mammals.
现在他们明白了呵欠对于鸟类和哺乳类来说起到了散热器的作用。
For instance, yawning should not occur when ambient temperatures exceed body temperature, as taking a deep inhalation of warm air would be counterproductive.
举个例子，呵欠在环境温度超过体温时不大可能发生，因为这时候深吸一口热空气只能帮倒忙。
Yawning is not just a sign of tiredness or boredom - it is the body's method of keeping our brain cool, scientists have found.
打呵欠不仅是疲劳或厌倦的信号——根据科学家的最新发现，它还是人体用来自动调节大脑温度的一种手段。
A spindly path of red and blue panels spidered out above nothing but star-studded space and a yawning black hole.
在星星点缀的空间中，一个巨大的黑洞上方，红色和蓝色面板组成的一条细长的道路蜿蜒伸出。
When the head begins to heat up, yawning acts as a natural "thermostat" by allowing cool air to rush in and bring the brain back down to a healthy temperature, research suggests.
科学家研究发现，当人的大脑开始出现过热时，打呵欠的动作就充当天然的“自动调温器”，让清凉的空气进入大脑，使大脑温度恢复到健康水平。
Prior studies reveal yawning leads to a heightened state of arousal, so a morning yawn may function somewhat like a cup of coffee in providing a jolt of energy.
先前的实验揭示呵欠可以产生一种加强的激励状态，所以早晨的一个呵欠也许就像一杯醒脑的咖啡那样提供少许的能量。
Yawning helps keep the brain cool, and the sinuses play a role in that process by acting as bellows, a new report suggests.
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。
A previous study in rats showed that yawning was triggered by rapid increases in brain heat and was followed by a sudden drop in temperature, he added.
他还进一步补充说，此前在鼠类身上实验的结果表明，打呵欠是由大脑温度急剧升高引起，而打呵欠后大脑温度又会骤然下降。
Yawning when others yawn, the study suggests, is a sign of empathy and a form of social bonding.
这项研究怀疑，伴随着别人打哈欠，是移情作用的一种体现，也是社会连结的一种形式。
The porter half made his appearance yawning, vaguely awake, and with a candle in his hand.
看门人半露出身子，打着呵欠，似醒非醒，手中拿着蜡烛。
Where a Nativity won't do, and a robin on a pudding would be crass, angels fill the yawning space with beauty and taste.
在一个没有新生事物，知更鸟都停在布丁上的粗鲁而令人乏味世界，天使们的出现让它充满了美丽的味道。
Yawning may help you keep a cool head-literally, a new study suggests.
打哈欠也许可以帮你保持头脑清醒——一项新的研究如是说。
The budget deficit reached a yawning 9.4% of GDP in 2006; Neil Shearing of Capital Economics, a consultancy, reckons it may be down to as little as 3.5% by the end of 2008.
2006年，财政预算亏空占gdp的比例高达9.4%；来自资本经纪公司(一家咨询公司)的内尔·希尔林认为到2008年底，这一数字将缩小至3.5%。
Doctors may be able to use excessive yawning as a way to identify patients with conditions that affect temperature regulation.
医生可以用哈欠过多作为确诊病人是否有影响温度调节的症状。
When asked why, the provost replied that his institution faced a yawning budget deficit.
但问道为什么，教务长回复说他的学院面临巨大的财政赤字。
When asked why the provost replied that his institution faced a yawning budget deficit.
但问道为什么，教务长回复说他的学院面临巨大的财政赤字。
We should celebrate the fact that we no longer have to pretend there is a yawning chasm between us and our new-found blood brothers.
我们应该庆祝，我们再不用假装我们与我们新的骨肉相连的兄弟之间存有鸿沟。
We should celebrate the fact that we no longer have to pretend there is a yawning chasm between us and our new-found blood brothers.
我们应该庆祝，我们再不用假装我们与我们新的骨肉相连的兄弟之间存有鸿沟。
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