Method Color doppler ultrasonic detection was used to observe various types of white pupil, and the follow up analysis was performed.

方法用彩色多普勒超声对不同类型“白瞳症”进行观察随访分析。

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The theory is that a white sclera surrounding a darker iris and pupil helps people work out where everyone else is looking.

该理论认为，围绕在深色虹膜和瞳孔周围的白色巩膜帮助人们判断出其他人在看哪里。

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Spending per pupil is now the same for black and white, yet black children generally continue to fare worse than whites because most of them continue to attend vastly inferior schools.

如今，黑人小孩和白人小孩的教育经费投入一样多，然而，与白人小孩相比，黑人小孩的表现普遍较差，因为大部分黑人小孩所上的学校仍然很次。

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Research by Gary Orfield of the University of California at Los Angeles shows that in 1988 the average white public-school pupil went to a school that was 83.4% white.

ECONOMIST: Segregation and shopping

"He was always talking about fighting people" remembers fellow pupil Jeremy White.

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