The master of ceremonies is my important friend.

The master of ceremonies is my dear friend.

He is deeply studying the civil code.

The Authorized Version is the most famous translation among English Bibles.

Orthoclase is a type of mineral, mainly found in granite.

There are more than a billion quintillion stars in this galaxy.

A regular polyhedron is a polyhedron where all faces are the same shape.

The cathode of this battery is made of copper.

These two variables are in a proportional relationship.

These two variables vary directly.