Видео с ютуба Explained By Md Roknuzzaman

Be careful, don't do this to the crab | MD Roknuzzaman

See why plastic money is made | MD Roknuzzaman

China's new technique for building railway lines | MD Roknuzzaman

See what happens if the parachute doesn't work | MD Roknuzzaman

How did the traffic police work in the past? | MD Roknuzzaman

You will be surprised to see this Japanese technique | MD Roknuzzaman

This is a smart public toilet that cleans itself | MD Roknuzzaman

See how the Chinese cross the river | MD Roknuzzaman

Can a car be tied down with tape? | MD Roknuzzaman

See how passengers are dropped off without stopping the train | MD Roknuzzaman

See how China builds buildings so quickly | MD Roknuzzaman

Is this what they call using cannons to kill mosquitoes? | MD Roknuzzaman

Why does a rabbit worry about its teeth? | MD Roknuzzaman

The world's largest cave that is separate from the rest of the world | MD Roknuzzaman

See what happens when a rat gets on a ship | MD Roknuzzaman

You will be surprised to see this trick of the Chinese | MD Roknuzzaman

New technology for fish farming | MD Roknuzzaman

Watch what happens when an elephant gets angry | MD Roknuzzaman

New technology to survive earthquakes | MD Roknuzzaman

See the way to earn double money | MD Roknuzzaman