stand-in
n. 替身
近义词：substitute，representative，foster，adoptive，temporary，short-term，replacement，understudy，deputy，reserve，lieutenant，double，standby，stand-by，relief，fill-in，reliever，backup，sub，fillin，
英英释义
Noun
- someone who takes the place of another (as when things get dangerous or difficult);
"the star had a stand-in for dangerous scenes" "we need extra employees for summer fill-ins"
例句
用作名词(n.)
- Mary stood in for the leading lady yesterday.昨天玛丽做了女主角的替身。
- She often stands in before a scene is being filmed.在正式拍摄一个场景之前，她常常充当演员的替身。