There are one or two major veins inside this cord.

脐带内有一、两条主干静脉。

That big honking circle in the center? That's the major vein that runs through the center of the leaf.

中间那个“尖叫”的大圆圈呢？这是贯穿叶子中心的主干静脉。

Let's take a closer look at these major veins.

我们仔细看看这些主要静脉。

The job of the superior vena cava is simple, and like many other major veins in the body, it is nothing more than a transportation tube.

上腔静脉的作用很简单，和体内其他许多主要静脉一样，它不过是一个运输管。

Now I remove the skin from the flesh of the chilies, along with the stems and the seeds and the major veins along the interior, where most of the heat lives.

现在我从辣椒的肉中去除皮肤，以及茎和种子以及沿内部的主要静脉，大部分热量都在那里。