Ammonium nitrate is widely used in the manufacture of fertilizers and explosives.

In chemistry class, I learned about the properties of ammonium chloride.

In this chemical experiment, we will observe the reaction using ammonium phosphate.

He likes to take a walk in the park at dusk.

I ate delicious ramen in Kagurazaka.

He is an expert in musicology.

He died from overwork.

Yoroshiku, please do your best to pass the exam tomorrow.

The deathwatch beetle is known for eating wood.

Yasumiasa is my best friend.