Meanwhile, scientists do know that addiction is at least partly genetic, and some people are more predisposed to form drug habits.

同时，科学家们确实知道成瘾至少部分是遗传的，有些人更容易养成吸毒习惯。

They still don't know but it's probably partly genetic, so I think if you have it in your family there's a chance you can have it yourself and these days, people are, you know, getting it more and more.

他们现在都不知道原因，可能部分原因是因为遗传，我认为如果你家族中有人得糖尿病，那你就可能会得糖尿病，最近得糖尿病的人越来越多。