Bit player
例子
Although she was a bit player in the film, her performance was praised for its subtlety.
虽然她在电影中是个小角色，但她的表演因其微妙而受到赞扬。
The director cast him as a bit player to bring authenticity to the background scenes.
导演选他当临时演员，为背景场景带来真实性。
