We don't have two different species of hydrogen here, so the electrons are perfectly shared.

我们没有两个不同源的氢原子，所以电子很好的而得到了平分。

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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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