Herpes simplex virus is a virus that mainly infects the lips and genitals.

My diet is rich in protein.

My father works at a famous think tank.

Dahlia is my favorite flower.

Bile salts play an important role in the digestion of fats.

My friend is suffering from herpes simplex.

This picture was drawn using charcoal paper.

He succeeded in developing a charcoal-powered vehicle.

I draw pictures using brown charcoal.

This charcoal-powered vehicle is said to be environmentally friendly.