He proposed a new theory about quantum mechanics.

Thanks to his serendipity, we were able to find a new business opportunity.

Intermolecular forces are an important factor in determining the properties of a substance.

Katoriki is a rare name, isn't it?

There are no aspirated consonants in Japanese.

An aspirated consonant is a sound that is pronounced with a strong exhalation.

Please ensure the safety around you when using fire at the camp.

He is behaving like an idiot.

Chlorine detonating gas is very dangerous, and it requires careful handling.

I can't resist his fascination.