Every weekend, I do volunteer work at a local shelter.

He is a very active person.

Action potential is an important mechanism for nerve cells to transmit information.

He is passionately engaged in extracurricular activities.

He is suspected of being involved in the sabotage of the company.

He is suspected of being involved in the sabotage of the company.

He is lobbying to influence politicians.

He is actively participating in social movements.

He likes to take a walk in the park at dusk.

This orthophoto shows the details of the terrain very clearly.