Myelin works in the same way that protective coverings work on electric wires.

VOA: special.2009.01.06

If this is the particular kind of axon that is 'myelinated', then it might have a layer of a special substance called myelin in sheathing the axon.

假设这是一种特殊的有髓鞘的轴突,它表面上会像鞘一样地包裹上一层,称为鞘磷脂的特殊物质

耶鲁公开课 - 生物医学工程探索课程节选

Surrounding the axon is a myelin sheath, which is actually just insulation.

髓鞘将轴突包裹起来,实际上形成了一个绝缘层

耶鲁公开课 - 心理学导论课程节选

A fatty substance called myelin covers and protects the fibers.

VOA: special.2009.01.06

As time passes, the unconnected myelin is destroyed.

VOA: special.2009.01.06

In patients with MS, the myelin becomes infected.

VOA: special.2009.01.06