One mode is intravenous injection and we're going to talk --

我们将要讨论的一种方式是静脉注射
there are different kinds of injection.

注射方式有很多种
You can put a needle into different parts of the body.

你可以将针刺入身体的不同部位
You can put it into a muscle,

可以刺进你的肌肉
you can put it under the skin,

可以刺进你的皮肤下面
you can put it actually into the spinal fluid that surrounds your spinal cord.

可以直接刺入包围着脊髓的脊髓液
Intravenous injection refers specifically to a needle

静脉注射是特指将针
that's placed within the bloodstream--within a vein,

刺入血管置于血液中
and so drugs are introduced directly into the bloodstream.

这样药物就能直接进入血液
The advantages of that should be obvious.

这种方法的优势很明显
That's what was related to Caitlin's comment,

它与凯特琳的研究成果有关
that drug is immediately introduced into the blood,

即药物进入血液之后