His historic performance took place ten years before black singer Marian Anderson performed at the Metropolitan Opera in New York.

VOA: special.2010.03.07

And that operation is being performed before others.

并且那个操作是在其它操作之前的。

哈佛公开课 - 计算机科学课程节选

And lots and lots of plays, lots and lots of new plays, things that have never been performed before,

很多戏剧，很多新剧，它们之前从没有上演过，

正在准备庆典 - SpeakingMax英语口语达人

It's nearly always commissioned by the king to be performed at court before a private audience of select nobility, it's commissioned by an aristocratic family to be performed at the aristocratic family's estate to honor or to celebrate a specific occasion.

它几乎是由国王指派,去庭院表演给一部分贵族的，它是由一个贵族家庭指派,在贵族家族的房子里表演,是去庆祝一个特定场合的。

耶鲁公开课 - 弥尔顿课程节选