In this world, there are as many ways as there are people, each walking their own path.

The human immunodeficiency virus is the virus that causes AIDS.

I read the Letter to the Ephesians and gained a deep understanding of Christian teachings.

We are here to solve that problem.

I like memorizing the Hyakunin Isshu.

It's difficult to memorize the Hyakunin Isshu.

He is studying the history of African Americans.

They have a variety of opinions, making it difficult to agree.

He is recognized as the top person in that field.

Zoonosis is a disease that spreads from animals to humans, or vice versa.