The calculation of the spherical angle is a part of geometry.

He is suffering from poverty.

He is playing the character of Kyu in the play.

This is my salary.

What time does the next semi-express train come?

I recently met a middle school classmate of mine on the train.

He is an old acquaintance.

There is no choice but to move forward.

His body was surprisingly flexible.

I am very interested in natural science.