How much is the toll for the highway?

Kou is a very smart boy.

The success of this project largely depends on the arbitrariness of each member.

Kouji participated in a baseball game on Sunday.

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.