Spectroscopy is an important means of investigating the properties of matter.

We live in social housing.

He works at a public enterprise.

How much is the toll for the highway?

How much is the toll for this highway?

Looking at the population pyramid, you can see that this country is aging.

You shouldn't tell him secrets because he has a loose tongue.

Kou is a very smart boy.

On nights when the moon shines brightly, I feel special.

The success of this project largely depends on the arbitrariness of each member.