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

Saito is my best friend.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Restoring this old house is a tough job.

The International Workers' Association is historically an important organization.

The mammoth is an extinct large mammal.

He prostrated before the king to show respect.

The ship capsized.

Shigeru grows vegetables in the field.