He has a deep interest in paleozoology.

He is as kind as a Buddha.

He is involved in the development of androids.

Cao joined the military as a new cadet.

His room is always miscellaneous, with things scattered around.

I'll leave the ending of this story to your imagination.

Recently, his popularity has been increasing.

He is an expert in ethology.

We went to the zoo with our family on the weekend.

He is an expert in ethology, and his research is highly regarded worldwide.