Surrounding the grey matter is white matter, which consists of the myelinated axons of various neurons.

灰质周围的是白质，由有髓鞘的元轴突构成。

The white matter consists of myelinated axons, which are separated into tracts that carry information to and from the brain.

白质由有髓鞘的轴突组成，它们被分成若束，负责向大脑传递以及从大脑向其他部位传递信息。

White matter refers to connections that are myelinated, coated in a layer of insulation, allowing for fast far-range communication between information hubs.

白质指的是有髓鞘的纤维，由一层保护层包裹，保证信息中心之间的远距离快速交流。

Frequently used neuronal pathways are myelinated, wrapped in a layer of insulation, allowing information to travel faster.

常使用的通路是有髓鞘的，包裹在一层绝缘层中，使信息能够更快地传播。

The young brain is largely not myelinated. Myelin is the coating of nerve fibers that connect nerve cells.

年轻的大脑基本上没有髓鞘。髓鞘是连接细胞的纤维的涂层。

Brain tissue that appears white is made of the myelinated axons that connect neurons while gray matter is made mostly of neuron cell bodies.

脑组织呈白色，由连接元的髓鞘性轴突构成，而灰质主要由元细胞体构成。

And although a big fissure separates the left and right hemispheres, the two halves communicate, through a series of myelinated axon fibers called the corpus callosum.

虽然左右半球之间有一条大裂缝，但这两半通过一列有髓的轴突纤维——也就是所谓的胫骨体——进行交流。

OK, so we got gray matter up here and white matter down there, mostly myelinated axons that have that layer of fat to make them conduct fast.

好的，我们这里有灰质， 下面有白质，大部分是有髓鞘的轴突， 它们有一层脂肪， 可以使它们快速传导。

Arrows shot from recurve bows fly, on average, around 240 kilometers per hour, which means that given a sufficiently long, myelinated, or large-diameter neuron, your thoughts actually could win the race.

由反曲弓射出的箭平均飞行速度大约是每小时 240 公里。这就意味着，只要元足够长，且被髓鞘化或有较长直径的话，你的思维实际上可以赢得比赛。