临时演员用英语怎么说？

临时演员

例句

• The previous year Adolphson had starred in a play in which Ingrid had been an extra. 上一年，阿道夫森在一部戏剧里担任主角，当时英格丽在剧中还只是个临时演员。
• We need a thousand extras for big crowd scene. 在拍摄群众大场面时,我们需要上千名临时演员.
• The previous year Adolphson had starred in a play in which Ingrid had been an extra... 上一年，阿道夫森在一部戏剧里担任主角，当时英格丽在剧中还只是个临时演员。