upper arc of vertebra

例句：

1. 1. Theupper arc of the spine is wherethe nerves and blood vessels are housed.
   脊柱的上段是神经和血管的所在地。
2. 2. During a spinal deformitysurgery, the upper arc of thespine needs to be straightened.
   在脊柱畸形手术中，需要将脊柱的上段矫正。
3. 3. The upper arc of thespine can be affected by various conditions suchas scoliosis.
   脊柱的上段可以受到各种条件的影响，如脊柱侧弯。