Join us as we learn about the cultural value of language and why endangered languages must be protected.

VOA: special.2009.12.02

You get a vaccine for chicken pox, it gets injected, and sometime later you're going to be protected against it.

当你拿到水痘疫苗,并注射入体内后,一段时间之后,你就可以免于感染

耶鲁公开课 - 生物医学工程探索课程节选

You have to inject it multiple times because the first blip that you get in immune response is not very high, you have to boost and often you have to boost again in order to get a high enough response to be protected.

你必须得进行多次注射,因为第一次注射,无法使免疫系统产生强烈反应,你得要增强免疫,通常还得再增强一次,以使反应足够强烈,从而起到保护作用

耶鲁公开课 - 生物医学工程探索课程节选

He said: "The rights and interests of the laboring man will be protected and cared for.

VOA: special.2010.08.12

Scientists took the eggs to a laboratory where they could be protected and closely observed.

VOA: special.2009.12.16

Millions of babies and children could soon be protected against the deadly disease pneumonia.

VOA: special.2010.03.29

But children and adults can be protected against tetanus with vaccinations.

VOA: special.2011.01.26

The legislation said the valley should be preserved and protected.

VOA: special.2009.01.07

Union leader Baso Rukmana says Indonesian industries must be protected until they receive the training and support needed to compete with China.

VOA: standard.2010.05.13

The right to be protected from violence and exploitation.

VOA: standard.2009.11.22

But,she said, there is still work to be done. (Sound) She says in Senegal, we still see cases of child abuse and children begging on the streets whose rights need to be protected.

VOA: standard.2009.11.22