to the other, so really all you need is a tube.

其实你所需要的就是一根管子
People have tried for years to use different kinds of tubes

人们尝试了很多年用过各种管子
to replace this section; the operation is called a cardiac-bypass.

来代替动脉这个手术叫做心脏分流术
A surgeon will go in, he will remove this diseased section of tissue,

外科医生会在里面移走病变的组织
or he'll just put a bypass around it,

或者在周围做一个旁路
that is, a tube that goes from this location and connects to this location.

就是一个从这里开始连至这里的一条管子
Like a bypass on the highway it's a clear route that allows you to get

就像在高速公路的旁边有条整洁的通路
around a route that's no longer passable.

让你绕过不能通行的道路
Well, these vessels carry a lot of blood.

这些血管运送大量的血液
They have to be very reliable vessels

它们需要是非常可靠的血管
because they need to carry blood all the time

因为你一直都需要血液
because your heart is constantly working,

因为心脏在持续的工作