Because the chronic cause of disease pushing belt it pushes the belt cause of disease time to be long, has the important epidemiology significance.

慢性病原挤带者因其挤带病原时间长，具有重要的流行病学意义。

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Because the chronic cause of disease gathers together the belt it to carry the cause of disease time to be long, has the important epidemiology exhausted righteousness.

慢性病原拢带者因其携带病原时间长，具有重要的流行病学惫义。

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Gambling has been a common feature of American life forever, but for a long time it was broadly considered a sin, or a social disease.

赌博永远是美国人生活的一个共同特征，但很长一段时间以来，它被广泛地认为是一种罪恶，抑或是一种社会疾病。

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He says looking back thousands of years can help researchers look forward by understanding how a disease changed over time.

VOA: special.2010.06.29

It was easy to tell if somebody had an infectious disease but you might not have known that they had cancer at that time and they just died.

如果有人患有感染性疾病,那很容易判断,但在那个时候医生可能不知道,病人得的就是癌症,病人就这么死去了

耶鲁公开课 - 生物医学工程探索课程节选

What was known at that time was that there was a disease in people, and there was a different disease in cows, and they looked the same some way.

当时人们所知道的就是,人得了一种病,奶牛得了另一种病,这两种病在某些方面很像

耶鲁公开课 - 生物医学工程探索课程节选

But it's difficult to envision deploying tens of millions of health workers for a single disease each time, especially since the Indian health system faces crippling health human resource shortages.

BBC: India's battle to finish off polio

Measles is particularly dangerous in young infants but anyone can get the disease at any time.

BBC: Long shadow cast by MMR scare

Barer says Celgene is open to applying for approval one disease at a time.

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