I lost my house key.

I dream of traveling through the universe someday.

Uchuu-kun, have you finished your homework for today yet?

His presence dominated the entire room.

Understanding data structures is important for improving programming skills.

This building is structurally very strong.

His explanation was impossible to understand.

It is important to understand the importance of health.

The key to success is in your own hands.

He is posting private tweets by creating a private account.