performance [pəˈfɔ:məns]

以下由轻松背单词网站提供

n.履行，执行；性能，特性；表演，演出

how well a person , machine , etc . does a piece of work or an activity

The performance lasted for three hours. 表演持续了三个小时。
His performance in the exams was not very good. 他考得不很好。