His rule was the epitome of evil tyranny.

The event horizon is a part of a black hole, referring to the region from which even light cannot escape.

He is writing a paper about the event horizon.

He practices archery every day.

Acetylcholine is one of the neurotransmitters.

He tried a new approach to the problem.

His approach to problem-solving is very original.

He is an alcoholic, and his life is very difficult.

From his point of view, the plan has a high chance of success.

We reached the summit of the mountain.