My father runs a real estate business.

The separation of powers is one of the basic principles of democracy.

In order to solve problems, it is important to listen to the opinions of many people, as the saying goes, 'two heads are better than one'.

In this chemical experiment, we will examine the properties of benzoic acid.

Let's calculate the area of this right-angled triangle.

I have been to Santo Domingo.

The era of the Three Sovereigns and Five Emperors is an important period in Chinese history.

He is collecting centime, the old currency of France.

I want to go to Saint Barthélemy.

Essential amino acids, which the human body cannot produce on its own, need to be obtained from the diet.