Euclidean geometry forms the foundation of geometry.

He is an expert in human anatomy.

I studied calculus at university.

He is an expert in folklore studies, and his research is highly regarded worldwide.

He is known as an expert in criminology.

He is known as an expert in population genetics.

He is an expert in phytopathology, making a significant contribution to agriculture.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.

Whenever he faced a difficult situation, he always said, 'The best of the Thirty-Six Stratagems is to run away.'