lumbar triangle

例句：

1. 1. The doctor performed an operation on the patient's lumbar triangle to relieve his pain.
   医生对患者的腰椎三角区进行了手术，以缓解他的疼痛。
2. 2. During surgery, the surgeon carefully dissected the lumbar triangle to access the affected area.
   在手术过程中，外科医生小心翼翼地解剖腰椎三角区，以便进入受影响的区域。
3. 3. The patient was advised to avoid lifting heavy objects and to exercise regularly to prevent injury to thelumbar triangle.
   患者被建议避免抬重物并定期锻炼，以防止腰椎三角区的受伤。