刘德华特首
换人 1.substitution (of players) ; change players 要求换人 request substitution 换人暂停 time-out for substitution 交换人质 exchange of hostage

单色的星空
体育比赛里的换人是substitution如换5号替换1号:Substitution, Player 5 for Player 1 .企业、公司里的换人,指人事变动:personel alteration