Quickly solving Rubik’s cubes
本文作者： Lü YIMING
我能玩转神奇的魔方！The Rubik’s cube is popular all over the world. Hungarian professor Erno Rubik invented it in 1974. It’s one of the hardest puzzles ever created. Have you ever tried to solve a Rubik’s cube? How quickly can you finish it? |  |
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