来自加州大学圣迭戈分校的卡迪克•穆拉里达兰和世界银行的万可太实•桑德拉拉曼，在印度安德拉邦的300所国立学校中试验了这个想法。
Two researchers, Karthik Muralidharan of the University of California at San Diego and Venkatesh Sundararaman of the World Bank, tested that idea in 300 state-run schools in Andhra Pradesh in India.
马哈拉施特邦20多万的帕迪部落人非常不幸。
The Pardhis, of whom there are more than 200,000 in Maharashtra, are especially wretched.
马哈拉施特邦20多万的帕迪部落人非常不幸。
The Pardhis, of whom there are more than 200,000 in Maharashtra, are especially wretched.
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