He participated in the student movement of the 1960s.

I will abstain from attending this meeting.

We are participating in this project by delegation.

Please remember to bring your admission ticket.

I distributed materials to all participants.

He is known as an activist for environmental issues.

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

He is a very active person.

He likes watching old movies.

He is lobbying to influence politicians.