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

灰质周围是白质，由有髓神经元构成。

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

白质由有髓组成，它们被分成若干神经束，负责向大脑传递以及从大脑向其他部位传递信息。

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

年轻大脑基本上没有髓。髓是连接神经细胞神经纤维涂层。

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

经常使用神经通路是有髓，包裹在一层绝缘层中，使信息能够更快地传播。

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

白质指是有髓神经纤维，由一层保护层包裹，保证了信息中心之间远距离快速交流。

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，但这两半通过一系列有髓纤维——也就是所谓胫骨体——进行交流。

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.

由反曲弓射出箭平均飞行速度大约是每小时 240 公里。这就意味着，只要神经元足够长，且被髓化或有较长直径话，你思维实际上可以赢得比赛。