He plays a central role in this project.

We went to see a movie in the town center.

In physics, it is important to calculate the center of mass of an object.

I really get angry at his attitude.

This project was difficult, but we are finally getting closer to success.

He was standing up straight in the middle of the room.

The moment he asked that question, a flag was raised in my heart.

In this area, vegetables grow up.

He ended up having to bear the expectations of his family.

He stands out with his bright clothes.