Kou Sennen is my best friend.

I was able to know the truth of the hundredth year.

There is a Citrus nobilis tree in my garden.

We are in a marriage with an age gap, but our love is deep.

He started a business without a plan, forgetting the lesson of 'peach and chestnut seeds take three years to bear fruit, persimmons eight years.'

He went to America as an international student.

That high school girl studies in the library every day.

He is working at a school as a student teacher.

The Phanerozoic eon is the most recent eon in the history of the Earth.

I am majoring in biochemistry at university.