Insects are an important part of the natural world.

He is world-famous as an entomologist.

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

I stayed up late every night and ended up ruining my health.

Ancient people looked up at the sky and observed the movement of the stars.

Ancient people looked up at the sky and observed the movement of the stars.

He prayed to the heavens.

The sky is blue, and the weather is nice, isn't it?

When I looked up at the sky, a beautiful blue sky was spread out.

The Tinea translucens ate my clothes in the closet.