Fluoromethane plays an important role in chemical reactions.

Chloromethane is often used in organic chemistry experiments.

Difluoromethane is widely used as a refrigerant.

There are three boys named Akira in the class.

He rose in the world through hard work and talent.

He always plays minor parts in the theater company.

The Hachijō bulbul is chirping outside the window.

The Democratic People's Republic of Korea is located in Asia.

We have to fill in this hole.

He continued to hide his talents as if to hide his light and conceal his tracks.