Understudying
v. 练习做临时演员( understudy的现在分词 )
🗣️ 情景例句
Oh, hi, Robbie. Good morning.
啊 ，Robbie， 早安。
I informed her mother of her safe arrival.
我通知她母亲她已经平安抵达。
It is because his feet move on, but his head stays still.
这是因为他的脚动了，而他的头保持着静止。