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.

He is majoring in syntax at university.

He is an expert in enzymology and conducts many researches.

This scent comes from benzoin.

The population density of this area is very high.

I like reading uncle's composition.

My college is in Tokyo.