1.It's a good chance to broach the subject.

1.是开始提出那个问题的。

2.I thought I’d better broach the matter with my boss.

2.我想我最还是跟老板说一下事。

3.Have you broached the subject of the money he owes us?

3.谈没谈起他欠我们钱的事？

4.Before broaching the subject of this lecture, I should like to recall that the discoveries of radium and of polonium were made by Pierre Curie in collaboration with me.

4.在开始讨演讲的话题之前，我还想回忆一下，镭和钋发现是皮埃尔·居里与我合作完成的。