He is majoring in linguistics.

Rare earth elements are essential materials for the manufacture of electronic devices.

The atomic number of helium is 2.

An isotope refers to elements with the same atomic number but different numbers of neutrons.

Hydrogen is the most abundant element in the universe.

Transition elements play an important role in chemical reactions.

Modern technology is advancing at an astonishing rate.

This product is made entirely from natural raw materials.

Genjiro crucian carp is one of the traditional dishes in Japan.

I will make the maximum effort.