Usage patterns
〈事〉の参加者を募集するto recruit participants for an event
They are recruiting participants for the marathon.
参加者数number of participants
The number of participants increased significantly this year's event.
参加者に〈物〉を配るto hand out something to the participants
They handed out pamphlets to the participants at the reception desk.
参加者として〈動詞〉as a participant, to do something
She gave a speech as a participant.
