intrathecal injection

例句：

1. 1. The patient was given an intrathecal injection of medication to relieve his pain.
   患者接受了一次脊髓内注射，以缓解他的疼痛。
2. 2.The doctor performed an intrathecal injection to treat the patient's chronic pain.
   医生进行了一次脊髓内注射，治疗患者的慢性疼痛。
3. 3. During the surgery, the surgeon performed an intrathecal injection to numb the area around the nerve.
   在手术期间，外科医生进行了一次脊髓内注射，以麻醉周围神经区域。