The world's quietest room, where no one has yet managed to stay for even an hour #KnowledgeEncyclope

About a 14-year-old American girl who taught herself Chinese

alexaailisha

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

jixiepangke

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Speed Bump!! Cool Mechanical Series 6.17

jixiepangke

177 Views

The teasing has begun!

hanenhuih

459 Views

Those irresistible machines~

jixiepangke

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Why do sprinkler heads keep knocking when irrigating farmland? #Science #Decompression #Irrigation #

haoqiwanhuatong

7 Views

Unboxing video!! The irresistible charm of machinery

jixiepangke

15 Views

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

haoqiwanhuatong

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The power of science

haoyongwujingongju

39 Views

Super cool mechanical series of speed bumps!

jixiepangke

26 Views

Speed Bump Mechanical Series! 7.30

jixiepangke

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Workers' amazing work site~

jixiepangke

17 Views

How to lay a qualified asphalt road? #Science #Unzip #Paving #Knowledge

haoqiwanhuatong

22 Views

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

tanmi

15 Views

Those skilled workers deliver satisfying results on the job site!!

jixiepangke

55 Views

Super cool mechanical series of speed bumps!

jixiepangke

6 Views

Super cool mechanical series of speed bumps! 7.18

jixiepangke

38 Views

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

jixiepangke

61 Views

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

yaki1

45 Views

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

Jinzhengmeiyongde

11 Views