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.

There is a bookshelf in the corner of the room.

Anyhow, we have to solve that problem.

Anyway, I want to go home soon.

In this right triangle, since one angle is 30 degrees, its complementary angle is 60 degrees.