We belong to the same class.

This statue is made of copper.

He found an old copper coin.

Carbonated beverages often go well with meals.

I organized the data using a spreadsheet software.

Nitrous oxide can be used for anesthesia and to boost engine power.

He is camping in the mountains.

It's my habit to go to the Jusan Mairi every year.

I am majoring in computer science at university.

Trigonometry is a branch of mathematics that studies the relationship between angles and triangles.