And that you can't do, because in the real world of course Shelly and Kagan pick out just two different names of this very same thing.

你不可能做到,因为在现实世界里,薛立和卡根指的是,同一个东西的两个不同名字

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But it does show that in the real world they are two different things.

但是这表明,在现实世界里它们是不同的东西

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They might have come from two completely different places, from two completely different species from different parts of the world, and they're put together in a new way and that's why it's called recombinant DNA.

它们也许来自两个完全不同的地方,来自世界上不同地区的两个完全不同的物种,以新的方式组合在一起,所以它被称作重组DNA

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