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Tom:
Could someone tell me what the world would look like after 100 years? 
有谁能告诉我一百年后的世界会是什么样子的吗？
Bob:
You can imagine. If you can’t, you can ask.
你可以想象啊，如果不想不出来，你可以问。
Tom:
Ask? Ask who and ask what?
问？问谁？问什么？
Bob:
You can ask the old people. They can tell you something.
你可以问那些老一辈的人啊。他们可以告诉你点东西。
Tom:
What can they tell me? You mean that they tell me how they feel about time changing during their whole life.
他们能告诉我什么？你的意思是，他们能告诉我，他们对他们一生中时代变迁的感受。
Bob:
Yeah, I hope it can help you.
是的，我希望这对你有所帮助。