My cat has been infected with the feline immunodeficiency virus.

His Japanese ability is improving gradually.

The human immunodeficiency virus destroys the immune system, causing the body to lose its ability to fight disease.

The human immunodeficiency virus is the virus that causes AIDS.

I heard the sound of cicadas in the park.

His forkball is reputed to be very difficult.

Anuttara-samyak-sambodhi means the supreme perfect enlightenment in Buddhism.

In his anger, he struck the wall and broke it.

He almost drowned in the pool.

He was playing by bouncing a superball.