"Today,about 85 percent of the burden of chronic diseases is concentrated in low and middle income countries,".

VOA: standard.2009.05.18

It is when political functions become concentrated into the hands of again the too few hands that we risk arbitrary government and the endangerment to the liberty of the individual.

因为一旦政治职权,过度集中于,少数人的手中,我们面临的风险,便是独断政府,及个人自由的危机。

耶鲁公开课 - 政治哲学导论课程节选

because they're like very, um, concentrated on their work.

可能是因为他们把精力全部集中在学习工作上了。

MIT的时尚品味 - SpeakingMax英语口语达人

Using the new technology, victims' rights organizations in Guatemala hope to now examine entire cemeteries in areas where massacres were concentrated, Suasnavar says.

VOA: standard.2009.12.18

But within 16 kilometers of her home live tens of thousands of cows and hogs in what are called concentrated animal feeding operations, or CAFOs.

VOA: standard.2010.05.06

For now,the battle against hepatitis B is concentrated in communities with large Asian populations.

VOA: standard.2010.07.26

They are diffuse,dispersed,spread out instead of concentrated the way that fossil energy was.

VOA: standard.2010.04.21

He says the process of sorting through those areas, which include sites around the country,but concentrated in the mountainous northern areas, will be a long and difficult one, though it is work that needs to be done in the name of the victims' families.

VOA: standard.2009.12.18

"It could be taken up by crustaceans like shrimp crabs, things like that which are the base of the food chain and that could be passed up to fish and then mammals and the toxins could be concentrated and that could be harmful to animals that feed on these smaller organisms."

VOA: standard.2010.05.09