Blood vessels in the head tighten to stop the loss of body heat and then relax to let blood flow rise; that sudden rush of blood is what causes the headache.
头部的血管收紧以阻止身体热量的流失，然后放松让血液流动起来，血液的突然涌入是引起头痛的原因。
In "The Song of the Wandering Aengus," I talked about the kind of flickering passion and the fire in the head that sends Angus out on his quest.
在《流浪者安古斯之歌》里，我讲了促使安古斯追逐的那种燃烧的激情和头脑里的火焰。
The bulb acts rather like a cap—it encloses the end of the hair in the head.
毛囊的作用有点像帽子——它将发根紧紧地附于头皮上。
The next day, when Ali was milking the cow, Albert hit the cow in the head.
第二天，当阿里正在挤牛奶时，艾伯特打了奶牛的头。
The inner envelope filled with helium in the head section of the blimp and the third built-in airbag at the tail is filled with ethane combustible gas.
飞船头部的内置气囊中充满了氦气，而置于尾部的第三节内置气囊则充满了乙烷可燃气体。
Dad comes up from the basement in his gimpy comic trot, concerned, takes a bullet in the chest, drops to his knees, takes one in the head, and that's that.
爸爸滑稽地一瘸一拐从地下室里小跑上来，结果胸口挨了一枪，跪倒在地，接着头上又中了一枪，就这样完了。
"Sometimes life hits you in the head with a brick," he said. "Don't lose faith."
“有时候，生活会给你当头一棒。”他说，“不要失去信心。”
While riding a bus in 2012, Malala was shot in the head by a Taliban gunman.
2012年，马拉拉在乘坐公交车时被一名塔利班枪手击中头部。
Although we had some excellent knowledge in all of these areas, much of it was in the head of the team lead.
虽然我们在这些领域有着非常好的知识背景，但是这些知识多数是在团队领导的头脑里。
Or they can be a simple voice in the head, like the one Tammy heard as she was driving along one night in thick fog.
或者他们也可能是人们脑海里的一个简单的声音，就像泰米在大雾笼罩的夜晚独自驾车时听到的一样。
In the summers, she taught in the Head Start program and worked at an officers' club on a military base.
在夏天，她在一个幼儿教学计划里教书，同时，她也在一个军事基地里的军官俱乐部工作。
Serious eye strain can lead to persistent headaches, muscle pain in the head, neck and upper back, as well as long term problems like myopia.
严重的眼疲劳会导致长期的头痛，头部，颈部和上发背的肌肉疼痛，也可能会引起一个长期的问题近视。
By clicking a product in the revenue list, open those rules that contain the selected product in the head of the rule.
单击此收入列表中的一个产品，打开在规则头内包含所选产品的那些规则。
After losing one point, he whacked himself in the head a few times with his racket. After another, he pounded his leg with the racket.
在丢掉一分后，他用球拍猛击自己的脑袋几下，在丢掉另一分后又用球拍狠击自己的大腿。
After losing one point, he whacked himself in the head a few times with his racket.After another, he pounded his leg with the racket.
在丢掉一分后，他用球拍猛击自己的脑袋几下，在丢掉另一分后又用球拍狠击自己的大腿。
Ultimately faith is not in the head or the heart but in the action of a sustained commitment.
真正的信仰并非存于头脑或者内心它透过承担诺言的举动而显现。
One of the Achuars' major beliefs, they discovered, is that the soul resides in the head, and during sleep it leaves the head and travels around and makes observations.
他们还发现，阿丘阿尔人其中一个主要的看法就是，灵魂是居住于头脑中的，当人进入睡眠状态后，灵魂就会出窍，四处游荡观察世界。
The inner envelope holds helium in the head section of the blimp and an ethane fuel gas in the three tail sections.
飞船头部的内置气囊中充满了氦气，而置于尾部的第三节内置气囊则充满了乙烷可燃气体。
If you include this in the head of your webpage, in an IE conditional comment, your page will render just fine.
如果你将其以IE选择性注释包含在网页的头部，你的页面就能正常渲染了。
Of course we all know the fairy tale about Chicken Little who assumesthe sky is falling when he gets hit in the head by an acorn.
当然我们都知道这样一个童话故事，小鸡认为天空塌下来了，因为一个果子击中了他的头。
For instance, when three Shabab fighters were found dead this week in Mogadishu’s Bakara market, each shot in the head, it was unclear who had killed them.
就在这个星期，在摩加迪沙的巴卡拉市场发现了三具青年党成员的尸体，他们头部都受到过枪击。谁会是凶手呢？
As if to italicize the point, little Charles crept under the kitchen table, only to have his mother accidentally kick him in the head as she crossed her legs.
我思绪未完，似乎是要附和我的感叹，小查里斯爬到了餐桌底下，刚好被他妈妈伸直脚时不小心踢到了他的头。
I used to sleep on the floor with my head right next to the closed door, so that if anybody opened it I would be slammed in the head and wake.
过去，我常常躺在地板上睡觉，脑袋顶着门。这样一旦有人试图推门而入，门板撞到脑袋，我就会惊醒。
We don't know what the percentage of people who survive a bullet in the head is, but we're pretty sure it's very slim.
我们不知道人的头部中弹活下来的几率是多少，但是我们很肯定的是，那样的几率凤毛麟角。
The disease includes a range of tumour types occurring in the tissues and organs in the head and neck, for example salivary glands and mucus membranes.
该疾病包括各种长在头部和颈部组织和器官各种类型的肿瘤，如长在唾液腺和粘液上。
Ms Baburova chased the killer; he turned and shot her in the head, and she later died.
巴布诺娃女士追着凶手，凶手调头一枪击中她的头部，没过多久，她也死了。
In fact, the architectural level of software description is in the head of the designer and, sometimes, in the technical documentation.
事实上，软件描述的架构层是设计人员的主要工作，有时候，在技术文档中。
In fact, the architectural level of software description is in the head of the designer and, sometimes, in the technical documentation.
事实上，软件描述的架构层是设计人员的主要工作，有时候，在技术文档中。
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