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This is what clemens and his colleagues call " the great discrimination " .

这就是克莱门斯和他的同事所说的“巨大歧视”。

New york -- roger clemens is a yankee .

纽约新闻--火箭人要在洋基升空了！

Clemens threw in the bullpen tuesday and yesterday .

老克星期二和昨天在牛棚练投.

Correction : the original version of this article identified michael clemens as coming from the kennedy school of government at harvard . He is actually a senior fellow at the centre for global development .

更正：原文中写到michaelclemens来自哈佛大学肯尼迪政府学院；但实际上，他是华盛顿智库全球发展中心的资深研究员。

Michael clemens of the centre for global development , a think-tank , and gabriel demombynes of the world bank says that a randomised trial is needed to disentangle what the millennium programme is doing from what is happening anyway .

全球发展中心的迈克尔克莱门斯（michaelclemens）和世界银行的gabrieldemombynes认为，需要进行一项随机试验来解答千年发展计划对正在发生的一切所起的作用。