I learned about the properties of phosphorous acid in chemistry class.

The climate of the subtemperate zone is characterized by mild winters and hot summers.

This bird is a subspecies that only inhabits specific regions.

In biology, a subkingdom is one of the large units in taxonomy.

This organism is classified into the subphylum.

I work at Ako.

This organism is classified under the subclass of mammals.

Momoa is my best friend.

In the past, 'Aichi' was used as an abbreviation for 'Arameda-shi'.

Asia is the largest continent on Earth.