According to the work of Professor James Vaupel and his co-researchers, 50% of babies born in the US in 2007 have a life expectancy of 104 or more.

根据詹姆斯·沃佩尔教授及其合作研究人员的研究，2007年在美国出生的婴儿中，有50%预期寿命可达104岁或以上。

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In response to past critics, Twenge and her co-researchers stress they are not trying to prove that the use of digital devices reduces young people's wellbeing.

在回应过去的批评时，特温格和她的同事强调，他们并没有试图证明使用电子设备会降低年轻人的幸福感。

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Salt is "a hidden factor in the obesity epidemic, " said Graham MacGregor, a co-author of the study by researchers at St. George's University of London.

英国乔治大学的研究人员，此项研究报道的作者格雷安.麦克格雷戈说：“盐是导致肥胖病的一种隐藏诱因”。

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Dr. Sudha Seshadri, is one of the researchers at Boston University who co-authored a new study on dementia.

VOA: standard.2009.12.30

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 and his co-researchers drew on studies that show that some people are more boredom-prone than others.

CNN: Is workplace boredom 'the new stress?'

Then Mr Leetaru and his co-researchers plotted who was communicating with whom to get a sense of the geographic distances dividing people who regularly chat via the microblogging service.

BBC: Twitter users defeat the distance barrier and reach out

In a paper published earlier this year in the British Medical Journal, Dr. Lo and his co-researchers showed they could find all 86 cases of Down syndrome in testing done on 752 pregnant women.

WSJ: New Prenatal Tests Offer Safer, Early Screenings