I drank sake with a sake cup.

He entered the room.

As a result of many years of smoking, he developed emphysema.

He experienced failure and had a bitter experience.

Heavy hydrogen is one of the isotopes of hydrogen.

She is interested in numerology.

I can fall asleep immediately after taking a sleeping pill.

He is majoring in applied mathematics at university.

Combinatorial mathematics is a branch of mathematics that studies the combinations of things.

The number subtracted from the minuend is called the subtrahend.