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Say It Right Series


Posted by Keth August 13, 2010 in the Group 中文吧.

我在世界是一个小一点人谁从来没做完Rubic的立方体。 今天我看了那数学家说了这个问题可以完了就是二十动。他们花三十年学习这个事实。杰出的。

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