play third fiddle

• 跑龙套,做无足轻重的角色,当第三把手

play third fiddle的用法和样例：

例句

1. The walk-ons take a V-shape formation on the stage, heralding the start of the play.
   戏台上那些跑龙套的呈八字形排开，好戏这就开场了。