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		     第一句:Why do people like to buy liquor in duty-free shops?     为什么人们喜欢在免税商店买酒呢?     A: Why do people like to buy liquor in duty-free shops?     为什么人们喜欢在免税商店买酒呢?     B: What do you mean? It's because it's much cheaper to buy liquor in duty-free shops.     什么意思?因为在免税商店买酒便宜很多。     A: But why?     为什么?     B: Well, it;s because in most countries liquor has a higher tax on it.     因为大部分国家酒类的税比较高。     第二句:Cigarettes are also taxed very heavily.     香烟的税也很高。     A: A lot of people buy cigarettes here too, isn't it?     很多人也在这儿卖香烟,对不对?     B: Yes. Cigarettes are also taxed very heavily.     是的,香烟的税也很重。     A: Now I understand. But I don't smoke.     现在我懂了,但是我不抽烟。
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