vein anesthesia

例句：

1. 1. The patient was given avein anesthesia to relieve hispain.
   病人接受了静脉麻醉以缓解他的疼痛。
2. 2. The surgeon performed the procedure under generalanesthesia.
   外科医生在全身麻醉下进行了手术。
3. 3. The patient was givena dose of morphine for thepain relief.
   病人被给予一剂吗啡以缓解疼痛。