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。

No I understand,but I don't smoke