He was so profound that it was difficult for us to understand his thoughts.

He is thought to be a greedy person.

His actions are said to be deeply sinful.

The Solar System is composed of eight planets, including Earth.

In this experiment, we will use the International System of Units.

We use this coordinate system to locate the position of an object.

We are a part of the Milky Way.

He found her on a dating website.

The ecosystem of this lake is very fragile.

In physics, the inertial frame of reference is a very important concept.