The members of the learned society met for their annual blackball session.这个学术团体的成员举行会议，进行一年一度的拒人于门外的无记名投票。Members can blackball candidates in secret ballots.成员可以在无记名投票中对候选人投反对票。Denial of a public-service job may blackball a person from future private employment as well.得不到公职的人也可能将来不为私人所雇用。