I am very interested in marine biology.

He is immersed in the study of dialectical materialism.

As the name suggests, onychophorans are a unique group of animals that have claws.

He is an expert in paleozoology and has a deep knowledge about the ecology of dinosaurs.

He has a deep interest in paleozoology.

He is as kind as a Buddha.

Mr. Sekigami bought a necklace for his wife’s birthday.

He shot an arrow at the target.

This cloth is one shaku square.

He divided the tree and made firewood.