This book explains in detail about various sexual positions.

Let's solve this problem with unity in diversity.

He was struggling to understand the concept of a hypercube.

Astrocytes are one of the important support cells in the brain.

Oligodendrocytes play a role in supporting the nerve cells of the central nervous system.

Einstein proposed the theory of relativity.

His actions always have a duality.

My younger brother caught the influenza.

This material has high corrosion resistance.

The prevention of venereal diseases is most important in safe sexual behavior.