他当时正在发表一个相当长的演讲。

He was making quite a long speech.

《柯林斯英汉双解大词典》

他曾经发表过一个“复兴奥林匹克”的演讲。

He once made a speech on the "Renaissance of the Olympics".

youdao

我作为英语组长，成为第一个发表演讲的人。

I, as the English group leader, became the first one who gave the speech.

youdao

他曾经发表过一个“复兴奥林匹克”的演讲。

He once made a speech on the 'Renaissance of the Olympics'.

youdao

他曾经发表过一个“复兴奥林匹克”的演讲。

He once made a speech on the 'Renaissance of the Olympics'.

youdao