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In just 30 seconds, you've actually invented a cable-stayed bridge without backstays!
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In just 30 seconds, you invented the Dougong #Structural Design #Increase Knowledge #Popular Science
In just 30 seconds, you invented the Luban lock
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In just 30 seconds, you built the Zhaozhou Bridge
In just 30 seconds, you invented a cable bridge
In just 30 seconds, you invented a robotic arm
In just 30 seconds, you invented the soil nail wall
In just 30 seconds, you built the Burj Al Arab
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