He is majoring in aerospace engineering.

He is attending a college preparatory school.

I found a 'Shinjiro Koizumi phrase' on the internet and couldn't help but laugh.

He is unsociable, so he doesn't participate in parties much.

These vectors are orthogonal.

These lines intersect orthogonally.

He has a collection of old banknotes.

Spectroscopy is an important means of investigating the properties of matter.

We live in social housing.

He works at a public enterprise.