He showed me his new toy.

He always supports my opinion.

I carry my lunch box every day.

That idea is just right, exactly what we needed.

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

We exist as a part of the material world.

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

Antibiotics don't work for colds, so please don't take them unnecessarily.

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

This food may contain carcinogens.