现在人们过一会就能回答问题，要是回退几十年，人们根本就不会去费心问这些问题，因为要得到回答非常困难，几乎是不可能的事情。
People now answer questions in a few moments that a couple of decades back they would not have bothered to ask, since getting the answer would have been impossibly difficult .
然后我会让你们来讨论时间线并进行总结，最后我们会一起回答问题。
Then I will hand it over to you to discuss the timeline and summarize and we'll take questions together at the end.
如果接受邀请去演讲但又不愿回答问题，会显得不礼貌或者胆怯。
If we accept the invitation to make a speech but refuse to answer questions, we might leave the impression of being rude or cowardly.
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