值得注意的是，调查人员对这两组儿童进行了仔细的比对，以便他们在年龄、民族、种族和社会阶层方面具有可比性。

It should be noted that the two groups of children had been carefully matched by the investigators so that they were comparable in age, ethnicity, race, and social class.

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这样做向美国最年轻的公民传递一个重要的信息：无论你属于什么种族民族，你都很重要。

Doing so will send an important message to the nation's youngest citizens: Whatever your race or ethnicity, you matter.

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过去的10年里，种族主义及对黑人和少数民族的敌意变得更加严重了。

The last decade has witnessed a serious rise in the levels of racism and hostility to black and ethnic groups.

《柯林斯英汉双解大词典》

Conquest and exile were events that normally would spell the end of a particular ethnic national group, particularly in antiquity.

一般情况下，一个种族群体的结局,不外乎就是征服其他民族或被其他民族征服，然后被流放，特别是在古代。

耶鲁公开课 - 旧约导论课程节选

Here's another graph of data on the metabolic syndrome showing how it differs by race and ethnicity.

这是另一幅关于代谢综合征的数据图,它表明代谢综合征在种族与民族间的差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选