He is an expert in teratology, studying the strange forms of organisms.

He is a specialist in that field.

He has a deep interest in teratology.

This picture has a strange shape.

His behavior was a singularity, and it was difficult to understand.

The form of this sculpture is very unique.

The conclusion of that argument was that he was right.

This road is dangerous, so please take another route.

He is planning to return to his home prefecture tomorrow.

This road is dangerous, so please do not pass through.