He played the role of an arbitrator.

We need accurate measurements for the science experiment.

He is looking for a certain book.

Bats use echolocation to fly around in the dark.

Imperialism has played a significant role in history.

Bats use echolocation to fly in the dark.

His work skillfully uses synecdoche.

Learning about the culture of specific Asia is very interesting.

The major premise of this argument is that all people are equal.

He drew a straight line using a T-square.