But a study of elderly patients discharged from a hospital's intensive care unit (ICU) shows that almost 40 percent did not survive beyond the research period of three years.

VOA: standard.2010.03.07

It could be the letter understood either graphically or audibly, and the variety of ways in which one can choose a basic unit in the study of linguistics means that you need a special word for that unit, which is characteristically "the tagmeme."

它既可以以图像的方式理解，也可以以声音的方式，因为每个人研究时选取的,基本的语言学单位不一样,所以需要一个特殊的名词来指代这个单位，这就是，法位“

耶鲁公开课 - 文学理论导论课程节选

Steven Russell, director of Massachusetts General Hospital's Diabetes Unit and co-author of the study, the next step is for researchers to develop a portable system about the size of a cellular telephone.

VOA: standard.2010.04.15

He wants to see an immediate reduction in pesticide use until the effects are better understood, and is pressing for the formation of a European Union environment unit to study the problem.

BBC: By BBC News Online's Environment Correspondent Alex Kirby

Its Oxford unit is leading a study of prostate cancer and diet as part of a European study called EPIC.

BBC: Fatty fish 'cut cancer risk'

Professor Valerie Beral, who is head of Cancer Research UK's Cancer Epidemiology Unit in Oxford, said this study was in line with previous research, although the figures differed.

BBC: Pill increases breast cancer risk