He is suffering from a protopathic disease.

He feels embarrassed to talk about his sex life.

This substance does not mix with water due to its high hydrophobicity.

Sexual exploitation is an absolutely unforgivable crime.

In biology, the phenomenon of moving towards light is called phototaxis.

This vitamin is water-soluble, so it easily dissolves in water.

This cold is highly contagious, so please be careful with prevention.

Database transactions need to ensure their atomicity.

A healthy sex life is important for overall health.

We learned about the importance of sex education at school.