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How was the Leaning Tower of Pisa constructed over 800 years ago, and why has it leaned for hundreds of years without toppling over?
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How was the Leaning Tower of Pisa constructed over 800 years ago, and why has it leaned for hundreds of years without toppling over?

How was the Leaning Tower of Pisa constructed over 800 years ago, and why has it leaned for hundreds of years without toppling over?

169Video ViewsNov 29, 2025
地底人

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