她被邀请在马德里的一个会议上发言。

She was invited to ___speak at a conference in Madrid.

代表所有成员，我想邀请你在我们的一次会议上发言。

On behalf of all its members, I would like to invite you to ___speak at one of our meetings.

专家将在峰会上就气候变化发表讲话。

The expert will ___speak about climate change at the summit.