He avoided talking about actual sex acts with her.

Palaeoclimatology is the science that studies the past climate of the Earth.

He was painting a picture using red lead.

School grammar is the foundation of Japanese education.

This public document contains important information.

My great-great-grandfather was engaged in agriculture.

This perfume uses expensive ambergris.

He left the room at lightning speed.

Luxembourg is a grand duchy in Europe.

He learned how to operate an anti-aircraft gun.