For example,husbands and wives in some ethnic groups are tested for the possibility of having a child with Tay-Sachs.

VOA: special.2010.03.23

Some people in the population are more biologically vulnerable than others, and the Pimas appear to be one of those groups.

人群中有一些群体,在生物学上处于弱势,皮玛族就是其中之一

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But first,we talk about some small groups and individuals in the United States who are helping the people of Haiti.

VOA: special.2010.02.05

Whereas, in some focus groups of these development companies, they're asking people, what features would you like on a DVD player?

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Questions of transparency have also arisen in the context of this election as some groups spending in this election cycle are not required by law to disclose their donors.

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Let me just pick up on this point, and this may have been discussed in some of the groups but it might not have.

WHITEHOUSE: President Obama Closes Forum on Jobs and Economic Growth