The European crucian carp is a type of freshwater fish, and it is not often seen in Japan.

I will start the meeting at 9 a.m. Eastern European Time.

He had to undergo treatment for paraphimosis.

This paper is a perfect square.

This table is a rectangle.

Feudalism was a social system in medieval Europe.

Slavery is something that robs human dignity and is absolutely unacceptable.

Feudalism characterized the social system of medieval Europe.

I am very interested in social science.

Japanese history had a feudal social structure for a long time.