Ladies and gentlemen, may I have your attention, please?

Welcome to our meeting.

I would like to express my welcome to all the participants here.

It is my home to introduce today's keynote speaker, Mr. Black.

Let's welcome Mr. Black.

Interfering words（介入语）

That's true. I totally agree.

That's right. It's a very good idea.

No, I don't think so.

I'm sorry. Could you explain it? I'm not very clear about that.

Can you give us some examples?

Go on. What else?