The Cleveland Clinic in Ohio says the cluster headache can be many times more intense than a migraine.
VOA: special.2010.03.30
The sheer cacophony of the clustered consonants in this line sets off -or has the potential to set off -- a powerful cluster of feelings.
这句诗中辅音全然不和谐,使人觉得,或者有意向让人觉得-,有力量的层叠之感。
Further down the line, for example, in the blastocyst I talked about before, we could obtain cells from this inner cell mass or this cluster of cells that becomes the embryo.
沿着这条线看,举个例子,就是我之前提到过的囊胚,我们可以取一些内细胞群的细胞,这种能成为胚胎的细胞群
"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
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
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