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B：Guess what! I know something you don't know!

你猜怎么着?我知道一些你不知道的事!

L：What's that?

什么事?

B：How many planets are there in the solar system?

你知道太阳系有多少行星吗?

L：That's easy. Everyone knows that there are nine.

很简单，大家都知道有九大行星。

B：Not anymore! Can you believe it? They've decided that Pluto is not a planet anymore!

现在可不是啦!你相信吗?他们决定取消冥王星的行星资格了。

L：Nice try. I wasn't born yesterday, you know.

想得美。别哄我了，我又不是三岁小孩。

B：I'm dead serious. They've decided that it's too small to be a planet, but actually they haven't yet agreed on how big something has to be in order to be a planet anymore.

我是认真的。他们认为冥王星太小了，不够做行星的资格，不过他们尚未对行星的体积究竟该有多大达成一致的意见。

L：That sounds crazy. But they can't just change their mind about things like that.

这听起来简直是疯了!他们不能对这种事情随便乱改主意。

B：Yes, they can. If you remember correctly, people used to believe that the world was flat.

是的，他们可以。如果你还记得的话,以前人们曾经以为地球是平的。

L：I suppose you're right. They also used to think that they were so important that the sun revolved around them, not the other way around.

我觉得你说得有道理。他们过去还认为人类是特别重要的，以至于太阳都是围绕着我们转的，不存在其他运行的方式。

B：We actually know relatively little about space and the cosmos.

可能事实上我们对空间和宇宙的了解只是非常有限的一点点。

L：Do you think that we'll one day be able to travel to another planet for a vacation?

你觉得未来我们有可能去其他星球度假吗?

B：I suppose we could actually live on a planet outside of the milky way.

我想我们可以居住在银河系以外的其他星球上。

L：Do you think we'll ever get to meet an alien from outer space?

你觉得咱们会在外太空遇到外星人吗?

B：I hope not. I think they would be a threat to those of us that lived on the Earth.

我希望不会。我觉得他们可能对生活在地球上的人类是一种威胁。

L：You're so old-fashioned. That's what people used to think about people from another country!

你的思想可太老派了。这就好像人们以前对外国人的看法一样!

B：Point taken. Hopefully one day, we'll live in an interplanetary society.

知道啦.希望未来有一天，我们能生活在一个行星际的社会里。