The discussion focused on three main problems.
討論集中在三個主要問題上。
I tried to lead the discussion back to the main issue.
我試圖把討論引回到主要問題上。
There was discussion about the fire and its likely cause.
對那場火災及其可能的起因進行了討論。
They finally settled down to a discussion of the main issues.
他們終于開始討論一些主要問題了。
The article served as a useful starting point for our discussion.
這篇文章成了我們展開討論的良好起點。