He made a math problem.

His first publication was highly rated.

Day-to-day work at a Zen temple, known as 'samu', is part of daily training.

This check valve has the role of preventing water from flowing backwards.

His words had a big influence on me.

That news had a big effect on his decision.

My father has been running the operations of his company for many years.

My father is doing business at his own shop.

Eikichi is my best friend.

Eishoku is my best friend.