Why do you need a protective mask when polishing metal? #PopularScience #Unzip #MetalPolishing #Meta

Why can candles burn for a long time? Why did the ancients need to "cut candles"?

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

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

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Teacher Ni Haixia: Tianguan, why does one appear every 500 years?

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[Black Cat] Pokémon Sand Sculpture Cold Knowledge! Who are the heaviest, tallest, lightest and strongest Pokémon?

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【ACG Hard↗Knowledge】What is dead pool water?

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Let you fall in love with chemistry! A collection of Walter White's chemistry lessons in "Breaking B

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Analysis of "The Legend of Zhen Huan" 287: Why did Zhen Huan and Ling Rong [accompany the emperor] a

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Stephen Chow's classic movie clip - The MasterChef

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Do you know what ACG means?

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"Bungo Stray Dog" and "Demon Slayer" share the same voice actor role!!

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Fun English Cartoon 07: Distinguish between that and this in three minutes

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I used to think that Chinese electricians were awesome, but now I realize that Indian electricians a

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The Four Great Inventions of French Cuisine: A Talk on French Cuisine (16th Century to the French Re

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This episode is awesome! A practical sex education animation?!

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What is in this belly...

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What was it like to watch all the sex education animations in Japan 20 years ago in one go? !

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What is an "ultrasonic knife"? Using sound to cut things is indeed clean and neat!

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Why do we need wooden sticks to support the mine when we dig coal manually? #Science #Unzip #Mining

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If you think of paper as daytime, there is no need to draw light!

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