He is an expert in ecology.

When I looked out the window, it was raining.

He is working in the information system field.

He destroyed the room in anger.

He is a carnivorous man, being aggressive in relationships.

I like to read books at home on rainy days.

Rainy days make me feel down.

We had a picnic in the forest park over the weekend.

Forest fires cause great damage to the natural environment.

His words had a great influence.