He received an honorable award.

Tridymite, in mineralogy, is a type of silica and is often found in volcanic rocks.

In chemistry, we use projections to represent the shape of molecules.

Projective geometry is a branch of mathematics that studies geometric objects such as points, lines, and planes and their relationships.

Hygiene is very important for maintaining health.

This character is the old form of 衛.

Believing in the power of defense, we challenged the battle.

His eyes were sharp, as if nothing could be hidden.

He is the hero of our town.

I swim in the pool every weekend.