他们或已因轻度犯罪而逮捕，或是做为学校或社会的高危人群而被警员关注。
They have either been arrested by the police for minor offences, or have been identified by schools or social workers as being at-risk.
而大学体育做为学校体育的最高阶段，是培养学生体育意识，树立终身体育观念的重要时期。
However, the college physical education which is as the highest stage, become an important period for fostering the students' awareness to lifelong physical education.
研究的对象为1050名生于1976到1982年间，在明尼苏达州罗切斯特市一个学校的儿童，都被登记做为一个大的健康研究对象。
The study included 1, 050 children born between 1976 and 1982 in a single school district in Rochester, Minn., enrolled in a larger health study.
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