This bottle is reusable.

Who is the user of this software?

He is the most competent employee of our company.

Are you really not going to use this unused laptop?

There are a lot of old furniture in the storage room.

My brother is a graduate student at the University of Tokyo.

He is a world-renowned researcher.

My laboratory is on the third floor of the university.

He is known as an excellent researcher.

I am a member of that research association.