This ring is made of pure gold.

He has strong masseters, so he can easily bite through hard food.

If your muscles of mastication are strong, you can chew food more efficiently.

The doctor told him that he might have been infected with leprosy bacteria.

Mycobacterium leprae is the bacterium that causes leprosy.

Gonococcus is a bacterium that causes one type of sexually transmitted disease.

When he opened the door, a metallic sound echoed.

Kinbun are characters engraved on ancient Chinese bronze ware.

He caught that gold-colored fish.

This forest is designated as a no-hunting zone.