I will start the ball rolling by introducing the first speaker.

我来介绍一下第一讲者作为开始。

Angry crowds converged on the speaker.

愤怒的群众向讲者拥。

The speaker shall limit himself to several aspects of the subject.

讲者个方面来发表对个问题的看法。

The students enjoyed the speaker so much that the clapping continued for a long time.

"同学们非常欣赏那讲者的讲,掌声经久不息。"

Forgetting his speech disconcerted the speaker.

忘了讲词使得讲者手足无措。