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applicant; candidate; person interested in doing something; person wanting to do something; interested party; volunteer
参加希望者は事前に申し込んでください。
Those wishing to participate, please apply in advance.
希望者が多くて抽選になった。
There were so many applicants that we had to hold a draw.
希望者を対象に無料の説明会が開かれた。
A free information session was held for interested applicants.