In psychology, it is important to understand human emotions.

Gender roles are an important element in defining individual behavior in society.

This material has high elasticity.

She enjoys her sex life using a sex toy.

His toughness supports him even in difficult situations.

His work has various facets, and each can be interpreted from different perspectives.

This compound has high hydrophilicity, so it mixes very well with water.

Sexology is the scientific study of human sexual behavior and sexuality.

His work is full of ingenuity.

She was sold as a sex slave in the past.