Eighty to ninety percent of cluster headache patients have pain over a number of days to a whole year.

VOA: special.2010.03.30

If I get you down to a cluster of about 30 water molecules, the boiling point is a function of the size of the water droplet.

如果对于一个由30个水分子,组成的簇，沸点是,水珠尺寸的函数。

麻省理工公开课 - 固态化学导论课程节选

There's like a 60's, there's an Asian class, a sex cluster... There's lot of different topics

有60年代，亚洲教育课，性教育课……有很多不同的主题，

群集课程 - SpeakingMax英语口语达人

Harvest the center flower-bud cluster of broccoli when it reaches the size you want and while the buds are still tightly together.

VOA: special.2010.03.09

The cells of this cluster inside next to the fluid filled cavity is a region of the blastocyst called the inner cell mass.

而这簇细胞的内侧,毗邻于充满液体的空腔的一侧,这些细胞在囊胚中称为内群细胞

耶鲁公开课 - 生物医学工程探索课程节选

The Cleveland Clinic in Ohio says the cluster headache can be many times more intense than a migraine.

VOA: special.2010.03.30

So, we know ourselves that our behavior is due to a complicated cluster of the situation and our personal natures.

我们知道我们的行为是由于,一连串复杂的情况和我们的个人本性。

耶鲁公开课 - 心理学导论课程节选

When the nerve is made active, it starts pain linked to cluster headaches.

VOA: special.2010.03.30

Starting next week you'll actually be using a cluster Cloud CS50 net of systems that CS50 itself runs called Cloud.CS50.net.

从下周开始你将使用一个运行CS50的系统群集,称为。

哈佛公开课 - 计算机科学课程节选

Doctors say cluster headaches often strike during changes of season.

VOA: special.2010.03.30

They cluster in that way.

也能组成一个集合。

耶鲁公开课 - 文学理论导论课程节选

Cluster headache patients describe the pain as burning.

VOA: special.2010.03.30

A Christian civilization was deeply at the root of this cluster of ideas we call Manifest Destiny, as was a virulent kind of nationalism that boomed after the War of 1812 and through the 1820s into the 1830s.

基督教文明是我们所称的命运天定,及其相关思想的核心,它是一种有害的民族主义,在1812年战争后兴起,并流行于十九世纪二十年代和三十年代

耶鲁公开课 - 美国内战与重建课程节选

Cluster headaches usually strike young people.

VOA: special.2011.05.03

So the cluster I chose is the LA cluster,

所以说我选的就是洛杉矶集体课，

群集课程 - SpeakingMax英语口语达人

Cluster headaches occur in cycles: sufferers can experience several headaches a day for weeks or even months on end.

VOA: standard.2009.12.17

There's a cluster of cells here, there's a sheet of cells that forms an outer lining, and what is most noticeable is this cavity, this fluid filled cavity which begins to develop.

有一簇细胞,一层细胞构成了外形轮廓,最明显的结构就是这个空腔,这一充满液体的空腔开始发育形成

耶鲁公开课 - 生物医学工程探索课程节选

"Our study showed for the first time a clear difference between oxygen and air in the treatment of acute cluster headache.

VOA: standard.2009.12.17

It was properly powered,randomized and placebo-controlled and really provides evidence for the use of oxygen in cluster headaches,"

VOA: standard.2009.12.17

Researchers also found that oxygen could stop the headache pain and eliminate other symptoms associated with cluster headaches, such as red,swollen and watery eyes.

VOA: standard.2009.12.17

And cluster headaches are debilitating. The typical treatment is an injection with the drug sumatriptan.

VOA: standard.2009.12.17

Dr.Peter Goadsby of the University of California and other researchers followed The doctors treated for cluster headaches in each patient using air and oxygen in separate trials.

VOA: standard.2009.12.17