Yamatobumi is my best friend.

He wants to learn about the life of nomads.

He played beautiful music using a pellet drum.

Universal gravitation is at work between the Earth and the Moon.

My daughter works as a signboard girl almost every day.

The steepest descent method is one way to solve optimization problems.

Based on the Air Pollution Control Law, factories must strengthen the management of exhaust gases.

The Riemann sum is a method for approximately calculating the integral of a function.

He found forensic evidence.

This museum exhibits a collection of rare ulexite.