In other words, he is still a student, isn't he?

His amazing talent startles everyone.

My hobby is drawing charcoal pictures.

I draw sketches using this charcoal paper.

I draw pictures using brown charcoal.

He is traveling around the world as an ecologist.

We must strive to protect the natural environment.

We should recycle to prevent environmental pollution.

We need to solve the problem in the production environment.

It took a long time to set up the development environment.