In Japan, 4 and 9 are considered unlucky numbers.

I can't stand his annoying attitude.

9/11 is an unforgettable day in American history.

I love Japan.

Ancient Japan was a place where beautiful nature and culture merged.

I live in Japan.

He solved a large number of problems.

Today is my unlucky day, so I think it's better not to do anything.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.