He is conducting research on mining.

He is good at making sculptures out of nephrite.

He spends a lot of time on public works.

Japan's heavy industry is famous worldwide.

Her ring was adorned with a beautiful aquamarine.

This error is on line number 20.

The geology of this area is mainly composed of tuff.

He works in the business category called IT.

He always follows us around like a goldfish's poop.

The legend of the Night Parade of a Hundred Demons has been passed down from ancient Japan.