He is an expert in musicology.

He is an expert in orthoepy, teaching pronunciation.

This room is covered with soundproofing material, so the sound doesn't leak outside.

He honked the car horn to get my attention.

The epiblast plays a crucial role in early mammalian embryogenesis.

Asian baneberry is a plant that grows naturally in the mountains of Japan.

We are aiming to kill two birds with one stone with this plan.

The Atlantic puffin is one of the most commonly seen birds in the North Atlantic.

The Papua fire-eating bird, with its unique appearance, is a bird you won't forget once you see it.

The children were playing by kicking a ball in the park.