Matthew Walker, a professor of psychology and neuroscience at the University of California, Berkeley, and his colleagues recruited 27 women and 17 men to come to the sleep lab.

加州大学伯克利分校心理与神经系统科学教授马修·沃克尔和同事招募了27名女性志愿者和17名男性志愿者，在睡眠实验室进行实验。

youdao

Dr Matthew Walker, who led the study, said: "We know that during REM sleep there is a sharp decrease in norepinephrine, a brain chemical associated with stress."

这项研究的领导者马修·沃克博士说：“我们都知道，在REM睡眠阶段，去甲肾上腺素会急剧下降，而去甲肾上腺素是大脑中一种与压力有关的化学物质。”

youdao

Shortly after lunch, a 57-year-old woman arrived at security pushing a walker and calmly put her brown purse into the bin to be X-rayed, said Sheriff Matthew Yez.

午饭以后，一位57岁的妇人拄着手杖来到安检口，十分平静地将自己的棕色钱包放到X射线的安检口接受检查。

youdao

Shortly after lunch, a 57-year-old woman arrived at security pushing a walker and calmly put her brown purse into the bin to be X-rayed, said Sheriff Matthew Yez.

午饭以后，一位57岁的妇人拄着手杖来到安检口，十分平静地将自己的棕色钱包放到X射线的安检口接受检查。

youdao