The number dynamic law of natural racial group of the trivoltinism mulberry white caterpillar was studied Using life table.

采用生命表的形式研究了三化性桑蟥自然种群数量动态规律。

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Black Americans have come a greater distance, over some of the highest hurdles, in a shorter period of time than any other racial group.

美国的黑人较其他族裔在更短的时期内跨越了一些最高的障碍，达到了一个更远的距离。

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Poverty increased among every racial group as well, with the sharpest increases among Hispanics, Blacks and non-Hispanic whites in that order.

随着贫困在西班牙裔、黑人、非西班牙裔白人急剧蔓延，报告中各个种族团体的贫困人口数也在不断攀升。

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"I do not believe that any ethnic, racial or gender group has an advantage in sound judging."

VOA: special.2009.07.18

And that involves the intentional destruction of a group in whole or in part for religious,ethnic or racial reasons.

VOA: standard.2010.03.18

During this period, Hooks helped articulate the group's positions on racial equity in hiring and school admissions and the creation of a national holiday to honor the late Martin Luther King,Jr.

VOA: standard.2010.04.16

It is true that children of every racial group do better, on average, when their parents have more education.

CNN: Commentary: What parents can do for their kids

They would indignantly reject the idea that a member of a given racial group is under suspicion because 10 percent of those with his skin color commit crimes.

FORBES: With Gun Control, Cost Benefit Analysis Is Amoral

Such mothers exist in large numbers in every racial group.

CNN: Commentary: What parents can do for their kids