He is interested in the Song pronunciation.

The doctor told him that he might have been infected with syphilis.

Diatoms are tiny marine organisms that produce oxygen and support the Earth's ecosystem.

That perturbing music was disturbing my concentration.

He enjoys playing mahjong with his friends at the mahjong parlor every weekend.

Freedom of thought is one of the basic human rights.

The power transmission facilities in this area are using the latest technology.

This power plant is transmitting electricity nationwide.

They are preparing for a full-scale attack.

We started the final all-out attack.