Understudy assignment接替安排
emergency understudy紧急替角演员
The Understudy替补演员
understudy detail预备演员
understudy plan接替计画
An Understudy备补
understudy system实习制度
walking understudy龙套替角演员
understudy rehearsal替角演员排练
N-COUNT（可数名词） An actor's or actress's understudy is the person who has learned their part in a play and can act the part if the actor or actress is ill. 替角
He was an understudy to Charlie Chaplin on a tour of the U.S.
他曾是查理•卓别林美国巡演的替角。