talk of／about
1．mention谈到；说到
In his lecture，Professor Wang talked of peaceful uses of atomic energy．在讲座中，王教授谈到了和平利用原子能。
We have talked of what we shall do next．我们讨论了下一步该干什么。
We are just talking of the most exciting book that we have tead recently．我们正在谈论最近读过的一本十分动人的书。
2．debate as a possibility; discuss 讨论…之可行性；讨论
The two companies have been talking about a merger．这两家公司一直在讨论合并的可能性。
What are you talking of？你们正谈论什么？