The water in the tube flows downward, yet the ping-pong ball actually moves upward against the flow!

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woshimeima

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DIY handmade 3D holographic projection—these materials are so much fun!

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Decompression video of the skilled worker series!

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Woke up to see mom by my side, so I kept calling out—it melted my heart!

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"This terrible mood was unexpectedly healed by adorable little humans!!"

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The baby braved mountains and rivers late at night just to see mommy—how blissful is that!

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A group of bees sit in a "classroom" to study. Is that so cool? In fact, they are trained little ins

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Homemade anti-theft treasure chest filled with gold, silver and treasures, which can only be opened

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How to cool water faster? Thermal imaging provides the answer!

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Different types of spirometry

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Don't throw away the快递cardboard box; make a treasure chest for your son with a four-digit password f

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Homemade gear safe, you need to enter the password first and then turn the gear to open it

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Make your own Antarctic adventure maze and explore Antarctica with your children on an icebreaker sh

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This is the basic principle of how a steam engine works. Try it with your children.

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My son's beloved sword whip was broken twice. What a pity!

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