un·der·study /ˈʌndɚ/
(v.)練習做臨時替角
Un·der·stud·y v. t. & i. Theater To study, as another actor's part, in order to be his substitute in an emergency; to study another actor's part.
Un·der·stud·y, n. One who studies another's part with a view to assuming it in an emergency.
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understudy
n : an actor able to replace a regular performer when required
[syn: standby]
v : be an understudy or alternate for a role [syn: alternate]
[also: understudied]