Market research is necessary before conducting a preliminary trial of the new product.

We should always remember the power of Kannon in difficult times.

Simple Mail Transfer Protocol is a protocol for sending and receiving emails on the Internet.

He fell in love with her.

He answered wrong in the test.

I am studying a foreign language.

My mother tongue is Japanese.

He is the pillar of his family.

I am studying Korean language.

The United Nations is an organization that maintains world peace and security.