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

I am a member of that research association.

My laboratory is on the third floor of the university.

He is a world-renowned researcher.

He is known as an excellent researcher.

A new approach is needed to solve this set of problems.

The main problem with this project is the lack of communication.

This question text is too difficult, it's hard to understand.

This exam is a matter of life or death for me.

He is viewing that situation as a serious problem.