第三人称单数：understudies 现在分词：understudying 过去式：understudied
1.【戏】练习做(临时替角);临时代替(某演员)演出
2.实地研习,实习(某工作)
1.垫角,临时替角,候补演员;【体】〈美〉后补队员
2.候补人员;生力军
1.to work as an understudy for a particular actor
1.an actor whose job is to learn someone else’s part in a play so that they can perform if that person is sick
understudiesunderstudiesunderstudies