Invisible "lines"? Why can animals never cross them? [Dangdang Geography]

Using a straw to simulate the siphon structure of a toilet flush, the children were stunned

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Water will flow uphill

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The power of science

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A millennium-old mystery—anyone who understands can step forward and explain it.

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I advise you to quit porn (enlarging testicles)

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Decompression video of the workers series!

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What happens when the moon wakes up?

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strangeness! The cobra never attacks him

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Where have all the thousands of snakes gone?

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The foreigner's giant plow tractor actually has a cab from the last century!

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Splice | A Monster With Human DNA | Film Compilation

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Every little science experiment can be explained using scientific knowledge.

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A lion who has never seen a bullfrog

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The wisdom of the working people is to change the direction of force to move heavy objects. #Science

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[Movie&TV] Movie Clip: Countless Monsters Storming the City

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Today's stress-relieving video: An amazing workplace scene! 12.12

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Learn a wilderness survival trick every day

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50 years ago, the first person to be frozen was American billionaire Bedford. How is he doing now?

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Skilled workers create a satisfying work site!

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Let's follow Mechanical Punk to explore the irresistible charm of machinery!

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