中翻英一句句子

When coming to this problem, I have to say固定表达

I have to say something about this problem.

When coming to this problem, I have to say……

Speaking of it, we have to talk about...

When it comes to this problem,I have to (say)talk someting about it.

mention of this ,i have to tell u that~~

Talking about the problem had to say something ........