Some studies have warned that half-a-million people - or about 10% of the population - will be living with HIV and AIDS by the year 2025.

VOA: standard.2009.04.04

The problem with--there's a problem with gambling behavior because in a certain fraction of the population we have pathological gambling.

赌博行为有个特殊情况,在人群中总会有一小撮人,我们称之为病态赌博

耶鲁公开课 - 金融市场课程节选

One, because we have such a diverse population in San Francisco,

首先，因为在旧金山有来自各个种族的人，

旧金山的公立教育 - SpeakingMax英语口语达人

"You have a very large population of people stuck inside a combat area serving as a buffer between an impending government assault and Tamil Tiger resistance.

VOA: standard.2009.04.26

So, it's awkward to have to wait for a cow to get infected before you can vaccinate a population.

在给人们预防接种之前,你只有干等着,直到有一头奶牛感染了病毒才行

耶鲁公开课 - 生物医学工程探索课程节选

"There is an element of truth in that,". "But the option to simply starve a large population of civilians because you have a parasitic insurgency group attached to them is not a choice.

VOA: standard.2009.04.26

Norway has a much smaller population than the UK and they have a lot of oil up there in the North Sea.

挪威的人口比英国的要少得多,而且他们在北海拥有大量的石油。

耶鲁公开课 - 金融市场课程节选

Yes,we have indeed a certain timetable for (U.S.) withdrawal from the population centers, from the city-centers, but we are doing our utmost and we are coordinating very closely with the multinational forces to ensure there is no vacuum,".

VOA: standard.2009.04.25

I want to have the population at a number no greater than 20.

我希望人数是,不要超过20人。

麻省理工公开课 - 固态化学导论课程节选

Mr.Bani Sadr argues the Iranian people have good reason to be upset with the results of the election: He insists that for a population that wanted to express itself and vote, this kind of fraud is unacceptable and thus people have taken to the streets to protest.

VOA: standard.2009.06.14

Half of Americans have at least one, so it's affecting a lot of the population.

半数美国人至少患有一项慢性疾病,可见其影响之广

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

All tended to have a high slave-to-free ratio of population.

人口中奴隶所占的比例 都是非常高的

耶鲁公开课 - 美国内战与重建课程节选

All the sick people will come to you to buy life insurance and they will turn out to have a higher death rate than the population at large.

所有生病的人都会向你购买人寿险,而他们比普通人群,有着更高的死亡率

耶鲁公开课 - 金融市场课程节选

But you can imagine the inability to do that in a big population study with thousands and thousands of subjects, so we have to rely on data like this.

但你们可以想象在一个大样本研究中,不可能对数以千计的研究对象做这种培训,所以我们需要依靠像这样的数据

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

When you look at the risk of consequences from metabolic syndrome in the population, you have to know a person's race to some extent to understand how high their risk really is.

如果想要考察某人群,患代谢综合征的风险,就要知道一定的种族信息,这样才能较准确地知道他们的患病风险度

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You have to make those calculations and there are errors in that, but you come away with a population estimate of things like that.

你必须把这些都算进去,因为其中存在误差,但这样你会得出,整体人群摄取量的估算值

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You have to test it by giving the vaccine to a large population of people, and then watching and seeing if you've reduced the incidence of the disease.

这样的测试的做法只能是,给大量人群分发疫苗,接着观察和了解,这种疾病的发病率是否有所降低

耶鲁公开课 - 生物医学工程探索课程节选

The antigen has to be presented to helper T-cells, those helper T-cells have to stimulate a B-cell population to both proliferate and differentiate.

抗原需要被呈递给辅助性T细胞,这些辅助性T细胞需要激活B淋巴细胞,使其增殖和分化

耶鲁公开课 - 生物医学工程探索课程节选