这是消磨时间的好方式，特别是如果你只回答简单的问题，还有些人因为其他原因答疑解惑。
It can be a good way to kill time, especially if you stick to the relatively simple questions, but some people do it for other reasons.
我努力使他们相信，在接下来的一个小时(或是无论演讲持续的多长时间)内，我都是属于他们的，我将在这段时间内竭尽所能的帮助他们解答疑惑。
I try to convey the idea that I am theirs for an hour (or however long the presentation is) and that during that time I want to help them in any way I can.
一开始，医生们担心他们要花很长时间为病人们解答疑问。
At the outset, doctors were concerned that they would have to spend a lot more time answering questions from patients.
一开始，医生们担心他们要花很长时间为病人们解答疑问。
At the outset, doctors were concerned that they would have to spend a lot more time answering questions from patients.
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