Through that space stretches the vascular bundle, with xylem to transport water and phloem which transport sugars after photosynthesis.

通过这个空间，延伸出维管束，负责运输水，韧皮负责光合作用后运输糖。

So, could we use the asparagus and its vascular bundles to repair a spinal cord?

那么，我们可以用芦笋及其维管束来修复脊髓吗？

Look at how the vascular bundle spreads out in the leaf to form veins so that it can spread water throughout.

维管束是如何叶子中展形成叶脉的，这样它就能把水传遍整个叶片。

When Prototaxites first arrived on the scene, 420 million years ago, vascular plants had just begun to colonize the land.

4.2 亿年前，原紫杉首次出现时，维管束植物才刚刚这片土地上定居。

Huge forests full of ferns, mosses, and some of the earliest vascular plants had taken over much of the planet.

长满蕨类植物、苔藓和一些最早的维管束植物的巨大森林占据了地球的大分地区。

Water comes up through the roots and stem and enters the leaf through a vascular bundle, which contains a hollow tube for water transport called the Xylem.

水从根和茎上来，通过维管束进入叶子，维管束包含一个空心管，用于运输水，称为。

So not too long after these discoveries were taking place, I was at home cooking asparagus for dinner, and after cutting the ends off, I was noticing that the stalks were full of these microchanneled vascular bundles.

所以这些发现发生后不久，我正家里做芦笋当晚餐， 切掉末端后，我注意到茎上充满了这些微通道维管束。