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Tom:
Ask you a geographical question, which one is the longest river in the world? 
问你一个地理问题，世界上最长的河流是？
Bob:
The Nile, I think.
尼罗河，我认为。
Tom:
That’s right. Last night, I found a book about the Nile, and there were some pictures which were really pretty.
对的，昨晚，我昨晚找了本关于尼罗河的书，有好几张图片真的是漂亮。
Bob:
Oh, you want to go there?
噢？你想去？
Tom:
If I had the chance, I would.
有机会的话。
Bob:
Why do you love the landscape of the Nile?
你为什么会喜欢尼罗河的景色？
Tom:
I don’t know. It might because of the boundless stretch of desert and the oasis in it.
我不知道，也许是因为一望无际的沙漠，还有其中的绿洲吧。
Bob:
Oh, I didn’t know before.
我都不知道呢。