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

通过间，延伸出维管束，木质部负责运输水，韧皮部负责在光合作用后运输糖。

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.

维管束是如何在叶子中展开形成叶脉的，样它就能把水传遍整叶片。

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，维管束植物才刚刚开始在片土上定居。

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的大部分区。

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.

水从根部和茎部上来，通过维管束进入叶子，维管束包含一心管，用于运输水，称为木质部。

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.

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