He understood the danger of a high explosive.

You might be able to see a meteor shower tonight.

Date Masamune, known as the 'One-Eyed Dragon', was a famous general during Japan's Warring States period.

He is considered an epigone in the art world.

The underground water in this area is very clean and is used as drinking water.

The Adige is the second longest river in Italy.

The Congo River is the largest river in Africa.

The Danube is one of the longest rivers in Europe.

The Aar river is one of the beautiful rivers in Switzerland.

The Don is one of the important rivers in Russia.