a successful entertainer who has had a lot of experience

anyone with a lot of experience who can be depended on and does not complain

Thanks for being such a trouper, and helping out all evening. 多谢你这么任劳任怨，整晚一直在帮忙。

He took his disappointment like a trouper. 他虽有些沮丧，但不抱怨。