He is a world-renowned bacteriologist.

He is a renowned criminologist who has contributed to many crime analyses.

The seismologist is studying earthquake prediction and disaster prevention.

He is a world-renowned zoologist.

He is a renowned economist who has written many important papers.

He is world-famous as an entomologist.

He likes to take a walk in the park at dusk.

The inner slats of this fan are made very finely.

He carefully stores the family's urn.

Ossification is a biological process that refers to the transformation of tissue into bone.