What are the two different ways in which snake poison acts?

蛇毒发生作用的两种途径是什么?

One poison acts on the nerves, the other on the blood.

一种毒液作用于神经，另一种毒液作用于血液。

I think I can prove that the poison acts so quickly that the man was dead before ever you reached the room.

我想我有法子可以证明那毒刺的毒性很快，在你爬进屋里以前，舒尔托先生已经中毒身亡了。