Why don't firefighters just put out the fire? #science #release #firefighter #knowledge

Do you know how a key opens a lock, and how a locksmith opens a lock? #lock#decompression#knowledge

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Speed bumps for boys and girls!! Those novel machines

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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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Why do sheep stay still when they are being shorn?

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It turns out that the horns of different cows are so different.

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Speed bumps: the amazing work of skilled workers at work~

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Speed Bump!! Cool Mechanical Series 6.17

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

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Do you know why elephants crush watermelons before eating them? #elephant#elephantfoot#elephant eats

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Man Speed Bump!! Skilled Worker Series

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Skilled workers create a satisfying work site!

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Irresistible mechanical charm~

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The amazing workplace of skilled workers!!

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Take you into the real world of underground miners

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"The hilarious scene of firefighters rescuing people will make you burst into laughter, so be carefu

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Speed Bump Worker 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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Irresistible mechanical charm~

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Unboxing video!! – The Mechanical Series~

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What kind of job is so stress-relieving?!

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