Translations
All talks completed by Xuefeng Liu.
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比尔盖茨谈能源：创新到零排放!
27:49 Posted: Feb 2010
Translator: Xuefeng Liu
Reviewer: Sophielihui .
Language: Chinese, Simplified -
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Steven Levitt分析毒品交易经济学
21:15 Posted: Sep 2006
Translator: Qian Yue
Reviewer: Xuefeng Liu
Language: Chinese, Simplified