Let's create a timeline for the project.

He is dedicated to the study of the atmosphere.

His state is very stable.

The foundation of this building is very strong.

We play classical music every night for prenatal education.

They formed a line and opened fire.

What is your favorite sex position?

Knowledge about sex positions can help deepen your relationship with your partner.

This book explains in detail about various sexual positions.

There are regions that hold festivals based on the lunar calendar.