My scientific calculator can perform very advanced calculations.

The police are looking for an eyewitness to the incident.

The seismologist is studying earthquake prediction and disaster prevention.

He was an eyewitness to the incident.

The freight train passed through the station.

Let's roll the dice and decide the next action.

He is a world-famous physicist.

She is wearing ethnic clothes.

He is a famous psychologist, influencing many people.

In this chemical experiment, we will use undecane.