====宣布會議開始=====
Let's call the meeting to order.
Let's get things under way.
Let's get things started.
Shall me begin? ====揭示討論要點=====
Let me bring your attention to (what I see as) the main issues.
Let's focus on the main issues.
Let me tell you what I believe to be the main issues.
Allow me to set out the main issues for you.