This old document states that magnesium sulfate was used as a medicine.

Urajio is an old notation, now it is written as Urajio.

Silver salt plays an important role in photography.

He put on a false mustache to hide his true identity.

I want to travel to Southeast Asia.

The Arctic Tern, also known as 極鯵刺, can be seen in the Arctic region.

The arctic tern is known for its long-distance flights.

Learning about the culture of specific Asia is very interesting.

In this chemical reaction, succinate is produced.

This compound is a malate.