That is an excellent question, but first, you should be familiar with how CAM defines the structure.

这是一个非常好的问题，不过，你首先应该熟悉 CAM 是如何定义结构的。

youdao

The first question was difficult, but the rest were pretty easy.

第一个问题很难，但其余的都相当简单。

《牛津词典》

Young friend, I'll answer your question, but first do one thing for me.

年轻的朋友，我会回答你的问题，但首先要为我做一件事。

youdao

But first we answer a question about the strange American use of the number eighty-six.

VOA: special.2010.01.08

But the very first question I suppose we really need to ask is this.

但我认为我们首先需要问的是。

耶鲁公开课 - 死亡课程节选

But first,let's ask a slightly different question.

但首先，我们问一个不太一样的问题。

耶鲁公开课 - 死亡课程节选

But first this question: Why do so many people still think affluent white girls are the only ones suffering from anorexia and bulimia?

NPR: Roundtable: Black Women and Body Image

It's difficult for the other person to actually see what's on the screen, but the first question has, in fact, become one of paranoia.

CNN: Figuring out real-world etiquette for Google Glass

Yes, this all sounds very entertaining, but my first question for Christopher Brown and Mark Hunter, co-founders of TruthSerum.com, had to do with the accuracy and credibility of their invention.

FORBES: Is Your Personality More Like Barack Obama's Or Mitt Romney's?