The world's quietest room, where no one has yet managed to stay for even an hour #KnowledgeEncyclope

A traffic assistant without a helmet was stopped by a citizen

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Speed bumps!! A mechanical marvel men can't resist~

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Speed Bump!! Cool Mechanical Series 6.17

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Speed Bump for Boys and Girls: The Skilled Workers Series~

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How are the patterns painted on ceramics? #Science #StressRelief #Pottery #LearnSomethingNew

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Those skilled workers deliver satisfying results on the job site!!

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The teasing has begun!

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Is a fish that's been frozen still considered "raw"? 10.28

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Relaxing video: Skilled workers at a satisfying job site~

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Those irresistible machines~

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Let's take a look at the amazing workplace of skilled workers!!

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Why do sprinkler heads keep knocking when irrigating farmland? #Science #Decompression #Irrigation #

haoqiwanhuatong

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Unboxing video!! The irresistible charm of machinery

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They say diamonds are forever, but they can be burned and broken.

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The power of science

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Super cool mechanical series of speed bumps!

jixiepangke

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Speed Bump Mechanical Series! 7.30

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Workers' amazing work site~

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How to lay a qualified asphalt road? #Science #Unzip #Paving #Knowledge

haoqiwanhuatong

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Yemen is the first country to be destroyed by drugs, even children are not spared. How tragic is it?

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