Fiber optics is a part of communication technology.

This structure has existed for centuries.

The World Bank is an international institution that supports economic development around the world.

My major is chemical engineering.

He is an expert in mineralogy.

Her beauty is like a peony.

They used Euclid's algorithm to find the greatest common divisor.

I am planning to go to Gangwon in Korea next week.

He has no knowledge about anal sex.

He started training his anal sphincter.