We installed a new flowmeter in the factory.

He exercises his rhomboid muscles at the gym every day.

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

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.

We exist as a part of the material world.

This food may contain carcinogens.

This library is said to have historical value.

Ebola hemorrhagic fever is a highly infectious disease.