六合彩开奖结果

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Where do all the socks go?

Published: 23 August 2012
(Everyone is familiar with losing socks.聽 No matter how careful you are, or more precisely how careful you think you are, socks inexorably disappear.聽 Scientists have the same problem.聽 Or rather, in addition to the sock problem, scientists have a related problem: the disappearing book problem.聽 Typically, we don鈥檛 have a lot of books compared [...]
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