Plagioclase is one of the main components of the earth's crust.

This is our main goal.

He played a central role in the project.

Earthquakes are caused by the movement of the crust.

What are the ingredients of this product?

He ate one apple.

Feldspar is one of the main minerals that make up the earth's crust.

His house is diagonally across from my house.

That house is built slantingly.

The movement of tectonic plates can cause earthquakes.