An audition is a short performance given by an actor, dancer, or musician so that a director or conductor can decide if they are good enough to be in a play, film, or orchestra.
V-ERG
试镜;让…试演（或试唱、试音）
If you audition or if someone auditions you, you do an audition.
例句
I was auditioning for the part of a jealous girlfriend...我试演一个喜欢吃醋的女友角色。They're auditioning for new members of the cast for 'Miss Saigon' today...他们今天参加《西贡小姐》剧组招募新演员的试镜。