In the study, scientists placed highly sensitive measuring equipment two hundred to two hundred seventy meters under the ocean's surface.

VOA: special.2009.07.07

Right. Another way of saying it is there isn't random assignment of the subjects to the two conditions in the study.

换种方式说,受试者并不是随机安排在,这个研究中的两种情况下。

耶鲁公开课 - 心理学导论课程节选

You see the African-American individuals have a somewhat lower risk, although not a lot, from the white people individuals in this study, but the Mexican-Americans have elevated risk compared to the other two races.

非裔美国人患病风险相对较低,尽管在这项研究中,他们与白人之间的差异并不显著,但与这两个种族相比,墨西哥裔美国人患病风险则比较高

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Doctor Ruhli says researchers used this method to study changes in the tuberculosis bacteria from two thousand year-old mummified tissue.

VOA: special.2010.06.29

So this is really the first attempt, way back in the nineteenth century to study a market that's somewhere in the middle, where it happens most markets are there are two firms.

因此这就是它的第一个诱人之处,我们要回到十九世纪,去研究一个介于两者之间的市场,那个年代大多数市场都只有两家公司

耶鲁公开课 - 博弈论课程节选

In two thousand eight, the Journal of the American Medical Association published a study of unplanned deaths from prescription drugs.

VOA: special.2011.07.19

Way back in nineteen-eighty-two, we did a study on this, and then I'm going to show you some similar studies that have been done in subsequent years to show you how much the error is.

回到1982年,我们做了一个这样的实验,你们将看到一些类似的实验,是在随后几年中做的,向你们证明误差有多大

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In that group, twenty-two percent of the wives earned more than their husbands during the most recent year of the study.

VOA: special.2010.02.19

Two of the key players there are Frank Speizer, a physician who got the study started, The Nurses' Health Study I, that got started in 1976, and then Walter Willett who got Nurses' Health Study II started, and is still the principle investigator of these studies.

弗兰克.斯佩萨是两名关键成员之一,就是这位内科医生提出进行 这项研究,第一阶段护士健康研究开始于1976年,另一位主要成员是沃尔特·威莱特,他开始了第二阶段的护士健康研究,他还是这些研究的理论调查者

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

For example,a two thousand four study showed that the number of school nurses nationally failed to meet federal guidelines.

VOA: special.2009.08.06

A recent study found that people who smoke are nearly two times as likely as non-smokers to develop Alzheimers disease.

VOA: special.2010.03.09

The study linked almost one in every five such deaths in two thousand eight to the virus that causes AIDS.

VOA: special.2010.04.14

It has a study program currently available to college graduates in twenty-two countries in Asia, Africa and Latin America.

VOA: special.2009.09.24

But in a recent study they declared that forty percent of the tweets captured over a two-week period were "pointless babble."

VOA: special.2009.09.14

The group's most recent complete study shows enrollment in computer sciences increased five and a half percent in two thousand nine.

VOA: special.2011.03.22

The study involved forty-four traders and their profits and losses over a twenty-month period ending in two thousand seven.

VOA: special.2009.02.25

But why is that? A study published in two thousand three in the journal Science offered an answer.

VOA: special.2009.06.24

The study found that worldwide, more than two and a half million people age ten to twenty-four died in two thousand four.

VOA: special.2009.09.28

The two groups were retested four years later, and the study compared the results with the first test.

VOA: special.2009.10.21

A study published in Stroke last year involved about two thousand people with an average age of sixty-two.

VOA: special.2009.08.12

In two thousand eight, scientists reported on a study of cotton grown in six provinces in northern China.

VOA: special.2010.05.25

That is true,at least, of most of one thousand two hundred people who recently answered questions for a study on the issue.

VOA: special.2010.07.13

The study found that Jews are less than two percent of the adult population of the United States.

VOA: special.2010.03.05

A recent study shows a sharp increase in rock climbing injuries between nineteen ninety and two thousand seven.

VOA: special.2009.12.09

Only two areas did not have an overfishing problem in either the new study or the earlier one.

VOA: special.2009.09.08

In a new study, scientists in the United States tested vaccines made with two kinds of inactivated virus.

VOA: special.2010.07.12

The study examined employment records for eight cities in Minnesota for a three-year period through two thousand six.

VOA: special.2009.05.27

Students cannot return to the United States for two years after they finish their year of study.

VOA: special.2009.06.18

More than two thousand people between the ages of forty-five and eighty took part in the study.

VOA: special.2009.04.08

Two other reports will study the C.R.U.itself and explore possible violation of Britain's freedom of information laws.

VOA: special.2010.04.27