N-COUNT (尤指经验老到的)演员,表演者 You can refer to an actor or other performer as a trouper, especially when you want to suggest that they have a lot of experience and can deal with difficult situations in a professional way.
Like the old trouper he is, he timed his entry to perfection. 他是个老演员,出场时间把握得恰到好处。