it has a biological function in HIV,

它在HIV中发挥着生物功能
but we can use it for a technical logical function here

但在这里它可以发挥一个技术功能
by going backwards on the biological path from messenger RNA to DNA.

让它用信使RNA反转录出DNA
Now DNA that's produced this way

现在造出来的这个DNA
is not called genomic DNA

不叫基因组DNA
because this doesn't match the DNA in your genome,

因为这跟你基因组里的DNA不一样
on your chromosomes,right?

跟你染色体上的基因不一样对吧
The introns are gone now.

内含子没有了
It's called cDNA or complimentary DNA

它叫cDNA或者互补DNA
to indicate that it's a copy,

意味着它是一个拷贝
a complimentary copy of the messenger RNA.

一个信使RNA反转录得出的DNA拷贝
This is a much more efficient way to

用这个办法能更有效率地获取你