Well, in the case of weasels, their vertebrae and heads got longer, and an extra lumbar vertebra was added to their spine.

好吧，就黄鼠狼而言， 它们的椎骨和头部变长了，并且在脊柱上增加了一个额外的腰椎。

Each cervical, thoracic, and lumbar vertebra is separated by an intervertebral disc, which allows for a slight movement of the vertebrae, and act as a shock absorber.

每块颈、胸、腰椎之间都有一个椎间盘，它能使椎骨轻微移动，并起到减震的作用。

The spinal cord is connected to the brain and travels through the spinal canal to the second lumbar vertebra, where it ends in a cone, called conus medullaris.

脊髓向上连通大脑，在脊髓腔内一直延伸到第二腰椎，终止于此形成圆锥样结构，称为脊髓圆锥。