He imposed an unreasonable demand on me.

This restaurant has an all-you-can-drink plan.

An irrational number is a number that cannot be expressed as a fraction.

He had no intention of forcing her into a double suicide.

This movie is a tragedy themed around forced double suicide.

This food may contain carcinogens.

We exist as a part of the material world.

It is said that antimatter has properties opposite to those of matter.

The existence of dark matter has not yet been fully proven.

The air in this area is greatly affected by pollutants emitted from factories.