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 Hans Rosling's 200 Countries, 200 Years, 4 Minutes - The Joy of Stats - |
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日期: 13/05/2012 07:33 - 通過: bambano - 282 意見 - 類別: 各個
More about this programme: www.bbc.co.uk Hans Rosling's famous lectures combine enormous quantities of public data with a sport's commentator's ...
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中國的 
