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.

This animal is a protected species, so you must never touch it.

Protectionist policies are adopted to protect domestic industries from foreign competition.

The consent of the guardian is necessary.

Chameleons can change their camouflage color to match their surroundings.

Protectionist policies are introduced to protect domestic industries from foreign competition.