How strong is the friction when wrapping around a pole? #Science #StressRelief #Rope #LearnSomething

Why can the fountain stone ball rotate? #Popular Science #Unzip #Physics #Fountain Stone Ball #Trivi

haoqiwanhuatong

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Why do we need to grind off the bark? This is the process of peeling and rounding the wood before pe

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fun magnetic game

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How harsh is the environment on a polar research vessel? #PopularScience #Unzip #ResearchShip #Polar

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Doraemon: The rope of absolute justice has become a disaster for the town

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physics!!

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Speed bumps for boys and girls!! Those novel machines

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Decompression video of the mechanical series~

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Why do honey collectors only harvest a small portion of the hive when harvesting honey at high altit

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Speed Bump!! Cool Mechanical Series 6.17

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Skilled workers create a satisfying work site!

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Spoon/fork: If I had known this was a bad factory

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Speed Bump Worker Series

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Decompression video of the workers series!

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Why doesn't it hurt when a needle is stuck in my finger?

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Speed Bumps: Skilled Worker Series ~12.2

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Useless life hacks!!

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Learn a wilderness survival trick every day

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Men's Speed Bump Worker Series ~2.13

jixiepangke

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When woodpeckers peck at trees, are they really curing the trees' illnesses?

jixiepangke

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