The two tallest buildings in the world are the Burj Khalifa in Dubai, UAE and the Makkah Royal Clock Tower in Mecca, Saudi Arabia.

世界上最高的两栋建筑是阿联酋迪拜的哈利法塔和沙特阿拉伯麦加的麦加皇家钟楼。

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In the case of a tower of size 1, basically there are two things to do, right?

如果只有1个圆盘要移动，那么就只要做两件事就可以了对不对？

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