He was ill, so his understudy had to take the part.他病了，因而他的替角必须代他演出。Glover's understudy took over the role on Broadway.格洛弗的替角接替了他在百老汇的角色。Two doubles were employed for some small scenes.雇用了两个替角拍一些小场面。Two doubles were employed for this scene.拍这个场面雇用了两个替角。