Is this triangle vertical or horizontal?

Venus is closer to Earth, so why did humans give up exploring Venus and prefer heading to Mars inste

lilunkexue

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The teasing has begun!

hanenhuih

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

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

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How to make a Poo-Po-Po boat for Sosuke and Ponyo?

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

haoqiwanhuatong

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Why can loose sand be made into sand sculptures after mixing with water?

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How to draw a circle?

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

tanmi

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Those irresistible machines~

jixiepangke

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Unboxing video!! The irresistible charm of machinery

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20 common mechanical transmission structures, I'm exhausted

Jinzhengmeiyongde

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

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Why don’t civilian aircraft spray flames? The working principle of turbofan jet engines

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【HISHE】Jurassic Park Parody 1

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

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Workers' amazing work site~

jixiepangke

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Why doesn't it hurt when a needle is stuck in my finger?

yaki1

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I advise you to quit porn (enlarging testicles)

xuetudexin-

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Super cool mechanical series of speed bumps! 7.18

jixiepangke

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