New research published in two studies suggests that smoking may also affect another vital organ: the brain.

两项新发表的研究表明，吸烟可能会影响人类的重要器官：大脑。

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Pain at rest was significantly reduced in two studies, but not a third.

休息时的疼痛在两份研究中有显著降低，但在第三份研究中没有显著降低。

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The new research was reported in two studies published online today in the Journal of Alzheimer's Disease.

在《阿尔茨海默病》杂志今天在线发表的两篇研究中，报告了这份新的研究。

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Studies show that some American Robins are appearing in their nesting areas two weeks earlier than thirty years ago.

VOA: special.2009.05.12

The Minnesota Twin study, one of the most famous studies in the field of psychology, was done by Lykken and Tellegen,two prominent psychologists.

明尼苏达州的双胞胎研究，一个在心理学领域非常有名的研究，是两个杰出的心理学家Lykken和Tellegen做的。

哈佛公开课 - 幸福课课程节选

The studies found that the mistake rate in two intensive-care areas decreased when interns worked fewer hours.

VOA: special.2010.07.13

Dr. Summers and his colleagues demonstrated encouraging findings in two studies published in 2005.

WSJ: In a Squeaky-Clean World, a Worm Might Help Fight Disease

The risk turned up in two studies, both of which gave Revlimid to patients long-term after they had received bone marrow transplants.

FORBES: Celgene Falls on Secondary Malignancy Worries

When Sinclair's team fed resveratrol to yeast cells, fruit flies, and worms, the animals lived 14% to 70% longer, they reported in two studies in the journal Nature.

FORBES: Researchers are unlocking the mysteries of aging.