I am growing soybeans in my garden.

The duct system of this building is very complex.

During the attendance check at university, my friend did the roll call for me.

He was asked to proxy for someone during the attendance check in class.

In the past, Odaiba was a fortress for defense.

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.