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

He has a deep interest in paleozoology.

The ecosystem of zoobenthos is an important field of study in marine biology.

He gave me the cold shoulder.

He was able to find a solution from a difficult situation.

He said, 'See Naples and die,' and went on a trip to Italy.

I was surprised by his shabby clothes.

I came, I saw, and I won.

He was gazing at the distant mountains.

Himiko is my best friend.