This organism is classified under the subclass of mammals.

I have one Channa asiatica in my aquarium.

The Pope is positioned at the highest rank of the Catholic Church.

This high-performance computer can process complex calculations in a short time.

Today's lecture was very interesting.

We enjoyed a picnic in the suburbs.

My high school has very strict rules.

His filial piety towards his parents is wonderful.

He is truly a dutiful son to his parents.

He visits his parents' house every weekend for filial piety.