He is an expert in entomology, especially knowledgeable about butterflies.

Insects are an important part of the natural world.

He is world-famous as an entomologist.

My younger brother brought home head lice from school.

Lice are very troublesome pests.

I was surprised to find a bedbug on the bed.

His body is very healthy.

He made three robots.

He exercises his body every day.

His body looks like that of an athlete.