Each year an estimated two hundred fifty thousand to half a million children go blind from vitamin A deficiency.

VOA: special.2011.03.01

But can you see that the centers of electron deficiency lie on a sphere equidistant from the center?

但你看得到么,缺电子的地方分布在,与中心等距的一个球面上？

麻省理工公开课 - 固态化学导论课程节选

And by here, I mean it's net neutral, but the electron deficiency.

我的意思它是电中性的，只是有些缺电子。

麻省理工公开课 - 固态化学导论课程节选

Researchers found that these drinkers develop a form of esophageal cancer six to ten times more often than those without the deficiency.

VOA: special.2009.05.13

So iodine deficiency was a real problem and then salt started getting fortified with iodine, and that really corrected a lot of those deficiency problems around the world.

碘缺乏曾经是个大问题,随着加碘盐的逐渐普及,使得全球诸多碘缺乏问题得到了改善

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The report says the more alcohol that persons with this deficiency drink, the greater their risk.

VOA: special.2009.06.23

She is an expert in the development and genetics of immune deficiency viruses in primates.

VOA: special.2009.09.08

The cause is a genetic difference that they are born with called an ALDH2 deficiency.

VOA: special.2009.05.13

We also will tell about progress against acquired immune deficiency syndrome, better known as AIDS.

VOA: special.2009.12.08

In Japan and South Korea,for example, many people have the deficiency but still drink heavily.

VOA: special.2009.05.13

It estimates that at least five hundred forty million people have the deficiency.

VOA: special.2009.06.23

The more alcohol that people with this deficiency drink, the greater their risk.

VOA: special.2009.05.13

H.I.V.in humans can cause AIDS, acquired immune deficiency syndrome.

VOA: special.2009.09.08

AIDS is short for Acquired Immune Deficiency Syndrome.

VOA: special.2011.06.15

Extreme vitamin D deficiency causes deformities in children and weak bones in adults.

VOA: standard.2010.05.28

Doctors rarely see these conditions. But studies have linked vitamin D deficiency to a number of serious health problems, including heart disease, several types of cancer, osteoporosis,diabetes, Alzheimer's disease and some autoimmune disorders.

VOA: standard.2010.05.28

"Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of vitamin D deficiency in our population, not only in the U.S.,but worldwide" Vitamin D helps our bodies absorb calcium and helps form and maintain strong bones.

VOA: standard.2010.05.28