My family consists of thirty-two people.

Nitrogen dioxide is a cause of air pollution.

I want to learn about the history of Jūnishi.

A diphthong refers to the phenomenon where two vowels are pronounced consecutively within a single syllable.

My account is protected by 2-step authentication.

He is doing a special exercise to train his digastric muscle.

When learning Japanese grammar, it is important to understand the verbs of the second conjugation.

He made a model of a dodecahedron.

This house is warm even in winter because it has double-pane windows.

He defeated the enemy using a two-sword style.