我们现在知道过去做了太多背部手术，我要再次强调，在背部出现问题前做好预防措施才是关键。

We now know that too much back surgery was done in the past, and again, prevention before it starts, that's the key.

youdao

现在，如你所想，这个i才是关键。

Now, just so you're not confused, this i matters.

youdao

我明白这是一部电视剧(现在还包括2部电影)，无关现实，能够带来娱乐因素才是关键，但是一遍又一遍的观看这些陈词滥调真的有意思吗？

I get that it's a TV show (and now two movies) and not steeped in reality, and the whole entertainment factor is key, but is it really entertaining to watch cliche after cliche?

youdao

And having the very same body is the key to to personal identity. It's not the same person.

而拥有同样肉体才是人格同一性的,关键，现在的并非原来那个人。

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