It is rumored that he is running a business in secret.

In the past, this area was bustling with illegal commercial activities, known as 'mitsuei'.

He used an ear pick to remove his earwax.

She was wearing new earrings.

He whispered softly right by my ear.

We swear to be friends forever.

My father runs a warehouse business.

He is involved in the insurance business.

Her family makes a living in the silk industry.

My father works in the paper manufacturing industry.