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 .
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 .
