60秒科学:网络数据分析给足球明星排名(有声)

Soccer generates fewer performance statistics than does a sport such as baseball. A network analysis approach enables researchers to guage the value of individual players. Thats a shout World Cup enthusiasts dont hear too frequently. Soccers known fo

发表于:2019-01-02 / 阅读(266) / 评论(0)

60秒科学

SSS 2010-06-17

Thats a shout World Cup enthusiasts dont hear too frequently. Soccers known for low-scoring games, which makes it difficult to find an objective means of measuring the skill of top players. In a given game, a couple might nail a goal or have an assis

发表于:2019-01-08 / 阅读(290) / 评论(0)

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VOA标准英语2010年-Exodus From Haitian Capital Might be a

In the weeks following the massive earthquake in Haiti, thousands of aid workers from around the world rushed to provide food, medical and logistical assistance. The United Nations estimates the disaster killed some 200,000 people and left more than

发表于:2019-01-20 / 阅读(315) / 评论(0)

VOA标准英语2010年(二月)

美国国家公共电台 NPR After Other Options Fail, A Family Tries Medical Marijuana For Son With Autism

NOEL KING, HOST: All right. Here in the U.S., a small but growing number of states are allowing medical marijuana to treat severe forms of autism. That's raised the hopes of some parents whose kids are autistic, but there's not a lot of science about

发表于:2019-02-21 / 阅读(282) / 评论(0)

2018年NPR美国国家公共电台12月

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airy isostatic hypothesis