60 minutes of nothing to see while I do math
Channel: yanghaiying
Date: 2013-06-30

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http://www.amazon.com/gp/product/B0007YG7AQ/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0007YG7AQ&linkCode=as2&tag=yanghaiyingne-20