His feelings are conveyed to me.

Sound waves travel through matter.

What is this material made of?

The doctor examined my stomach using ultrasound.

This food may contain carcinogens.

We exist as a part of the material world.

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.

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

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