intraspinal block

例句：

1. 1. The patient was given an intraspinal block for pain relief.
   病人接受了脊髓内阻滞以缓解疼痛。
2. 2. The doctor performed an intraspinal block to relieve the patient's chronic back pain.
   医生进行了一次脊髓内阻滞来缓解患者的慢性背痛。
3. 3. During surgery, the surgeon used an intraspinal block to numb the area around the spinal cord.
   在手术中，外科医生使用了脊髓内阻滞来麻木脊髓周围的区域。