He belonged to the middle class under the Ritsuryō system.

In chemistry class, I learned about the neutralization reaction of acids and bases.

He neutralized the acid with a base.

My ship is equipped with a large winch.

Dainichi Nyorai symbolizes the teachings of Buddhism.

He was born in the middle ages.

He stood out even among the Japanophiles.

Thiazole is an important compound in organic chemistry.

In organic chemistry, thiazine is one of the important compounds.

I submitted a petition to the mayor asking for the preservation of the park.