The person who built the Hoover Dam was definitely a genius—why has it stood strong for 90 years?

Whoever invented mummification was a genius!

tiancaibaike

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What modifications can be made to an excavator? #PopularScience #Unzip #LargeMachinery #Excavator

haoqiwanhuatong

46 Views

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

tanmi

18 Views

Why do we cut trees at height? Will there be accidents? #高空伐木 #解压 #科普

haoqiwanhuatong

8 Views

black hole genius

guangyiyingyu

861 Views

Which genius designed this?

hanenhuih

10 Views

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

haoqiwanhuatong

10 Views

Why do we need to cut a slant on the tree when felling it?

haoqiwanhuatong

17 Views

Car Disassembly Video

haoyongwujingongju

33 Views

Why is steel colored after cutting? #Science #Unzip #Metalworking #CoolKnowledge

haoqiwanhuatong

29 Views

How are mooring ropes secured? #Science #Unzip #MooringRopes #Ship

haoqiwanhuatong

14 Views

Super cool mechanical series of speed bumps!

jixiepangke

8 Views

Building an underground Parthenon with a swimming pool with your bare hands? The 10 million high-pro

Conglinjianzaoxiongdi

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Introduction to Tequila

yaki1

63 Views

Why not use a high-pressure water gun to wash your car? #Science #Unzip #High-pressureWaterGun #CarW

haoqiwanhuatong

14 Views

Speed bump!! Amazing machinery~

jixiepangke

15 Views

Those talented young men from the royal family

yiqitouzhuo

96 Views

The Fertilization Process of Sperm and Egg

Jinzhengmeiyongde

8 Views

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

Jinzhengmeiyongde

14 Views

Why are the joints of steel cables so strong? #Science #Unzip #SteelCable #MachineryManufacturing #E

haoqiwanhuatong

25 Views