点击下方单词,选择对的这个单词
1. 预备演员；替角儿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.
1. an actor able to replace a regular performer when required
Synonym: standby
多通过句子记忆单词，而不是单独死记硬背。
