(72) 群众演员 - extra
下面是摘自Steven Spielberg传记的句子：
"Spielberg filmed huge crowd scenes for the invasion, using thousands of Chinese extras."
"Schindler's List has large crowd scenes and small, tender moments. One hundred and twenty-six actors have speaking roles in the film (compared to only twenty-two in Jurassic Park), and 30,000 extras were used."
extra在这里做名词，是“群众演员”的意思。
extra (noun):an actor in a film who does not say anything
but is part of a crowd:
He started his acting career as an extra.
-Longman
stand-in: 替身
leading actor - 男主角
leading actress - 女主角
supporting actor - 男配角
supporting actress - 女配角