Reducing the amount of sleep students get at night has a direct impact on their performance at school during the day.

减少学生晚上的睡眠时间会直接影响他们白天在学校的表现。

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So is reducing your environmental impact to zero, or creating the world’s largest online school.

将环境对你的影响降至最小，或建立一个世界最大的在线学校都是探寻。

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Paul Epstein of the Harvard Medical School says the impact both on nature and directly on humanity of global warming will swamp all other environmental factors.

哈佛医学院的Paul Epstein说全球变暖对自然和对人类的直接影响比起其他环境因素产生的影响更加严重。

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In many parts of the world we've seen that if governments introduce social protection programs, measures for example which give family benefits to families with children, particularly poorer families, this can have an important impact in enabling people to keep their children in school and out of the work force."

VOA: special.2010.05.17

This investment will also strengthen the impact the School has on the West Harlem community, one of the many reasons Mr. Kravis chose to make this gift.

FORBES: KKR Billionaire Henry Kravis Pledges $100 Million To Columbia Business School

Parish councillor David McPherson-Davies said he believed this would have a "significant" impact on the school.

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"There was no evidence to suggested that small group work had any substantive impact at the school level, " it added.

BBC: Behaviour classes 'lack impact'